Picture this: you crawl into bed after a long day, and the sheets feel like a warm hug from a cloud. That’s the magic of Kirkland Signature 680 Thread Count Sheets. I’m not just hyping them up—after sleeping on these for months, I can tell you they’re a game-changer for anyone who values comfort without breaking the bank.
Affordable luxury? Check. Durability? Check. A sleep experience that makes you dread leaving your bed? Double check. Trust me, these sheets from Costco are worth every penny, and I’m here to share why you should snag a set today.
My Journey With Kirkland Signature Sheets
Let me set the scene. I’m a self-proclaimed bedding enthusiast, but I’m not made of money.
I’ve tried everything from budget buys at Target to splurging on high-end brands that promise hotel-like luxury.
Most left me disappointed—either too scratchy, too thin, or just not worth the price tag.
Then, on a routine Costco run, I spotted the Kirkland Signature 680 Thread Count Sheet Set.
The price—around $90 for a king-size set—caught my eye.
I mean, four pillowcases, a fitted sheet, and a flat sheet for under $100? That’s practically a steal.
My first night with these sheets was a revelation. Sliding into bed felt like slipping into a five-star hotel suite. The Pima cotton felt soft yet substantial, with a sateen weave that gave it a smooth, almost buttery texture.
I’m a restless sleeper, so I was thrilled to find the fitted sheet’s Grip-On corners kept everything snug, even on my thick 16-inch mattress. No annoying pop-offs in the middle of the night! After a few washes, they softened up even more, and I found myself looking forward to bedtime just to feel that cozy embrace.
My husband, who usually doesn’t notice bedding, even commented, “These feel fancy.” High praise from a guy who thinks all sheets are the same.
What surprised me most was how well they held up. I’m notorious for washing my sheets weekly (sometimes more, thanks to my shedding dog), and these didn’t pill, fade, or lose their shape. Sure, they’re not perfect—I’ll get to that later—but my experience has been overwhelmingly positive.
These sheets have turned my bedroom into a sanctuary, and I’m not exaggerating when I say they’ve improved my sleep quality. Whether I’m binge-watching a show or catching up on sleep, these sheets make every moment in bed feel indulgent.
If you’re tired of mediocre bedding, I can’t recommend giving these a try enough.
The Pros of Kirkland Signature Sheets
When it comes to bedding, you want something that checks all the boxes: comfort, durability, and value. Kirkland Signature sheets deliver on all fronts, and I’m breaking down why they’ve earned a permanent spot on my bed. These are the reasons I keep raving about them to friends and family.
- Luxurious Softness That Gets Better with Time: These sheets are made from 100% Pima cotton, which is known for its long fibers that create a silky, smooth texture. Right out of the package, they feel soft, but after a few washes, they hit peak coziness. It’s like sleeping on a cloud that somehow gets fluffier over time. I’ve had guests ask what brand I use because they couldn’t believe the softness came from Costco.
- Impressive Durability for the Price: At $74.99 to $89.99 depending on size, these sheets are a fraction of the cost of high-end brands, yet they hold up like champs. I’ve put mine through dozens of wash cycles, and they still look and feel as good as new—no fraying, no thinning, no pilling. For the price, I expected them to wear out faster, but they’ve outlasted some pricier sets I’ve owned.
- Grip-On Corners That Actually Work: The fitted sheet’s extra-thick elastic, dubbed Grip-On technology, is a lifesaver. Whether you’ve got a standard or deep-pocket mattress (up to 18 inches), these sheets stay put. I toss and turn, and I’ve never woken up to a bunched-up fitted sheet. Even my dog jumping on the bed doesn’t budge them. It’s a small detail, but it makes a huge difference.
- Generous Pillowcase Count: King and queen sets come with four pillowcases, which is a rare treat. Most brands give you two, but Kirkland doubles down. This is perfect if you’re like me and love extra pillows or need spares for when one set’s in the wash. It’s a thoughtful touch that adds value to the set.
- Breathability for Most Sleepers: Pima cotton is naturally breathable, which helps regulate temperature. I don’t overheat in these, though I’ll admit they’re not as cooling as percale or bamboo for super hot sleepers. For most of us, though, they strike a great balance. I sleep comfortably year-round, even in my stuffy apartment.
- Costco’s Stellar Return Policy: If something goes wrong—like a rare defect or if you just don’t vibe with them—Costco’s risk-free return policy has your back. I haven’t needed it, but knowing it’s there gives me peace of mind. It’s like a safety net for your bedding investment.
The Cons of Kirkland Signature Sheets
No product is perfect, and while I’m a huge fan of these sheets, they’ve got a few quirks you should know about before you buy. I want you to go in with eyes wide open, so here’s where they fall short.
- Limited Color Options: You’re stuck with four colors: white, ivory, gray, and blue. If you’re dreaming of bold patterns or vibrant hues to match your bedroom decor, you’ll be disappointed. I went with ivory, which looks classy but doesn’t scream personality. It’s a minor gripe, but I wish there were more options to spice things up.
- Slightly Insulating for Hot Sleepers: While the Pima cotton is breathable, the sateen weave can feel a tad warm for those who run hot at night. I noticed a slight clamminess on warmer nights, though swapping out my heavy comforter fixed this for me. If you’re a sweaty sleeper, you might prefer something airier like percale.
- Availability Can Be Spotty: These sheets are popular, and Costco’s stock can sell out fast, especially in certain colors or sizes. I had to wait a couple of weeks to snag my preferred color, which was a minor hassle. If you’re impatient, this could be a frustration.
- Not the Cheapest Option: At around $90 for a king set, they’re pricier than budget brands like Mellanni or Target’s Threshold. If you’re on a tight budget, you might hesitate, though I think the quality justifies the cost. You’re paying for longevity, not just a quick fix.
- Occasional Quality Control Issues: Some users report issues like holes or shredding after a few months. I haven’t experienced this, but it seems to happen with heavy use (think sharp toenails or rough mattresses). Costco’s return policy mitigates this, but it’s worth noting if you’re tough on your bedding.
Maintenance Tips For Keeping Your Kirkland Sheets in Top Shape
You’ve invested in these amazing sheets, so let’s talk about how to make them last. I’ve learned a few tricks to keep my Kirkland Signature sheets looking and feeling luxurious, and I’m sharing them so you can get the most out of your purchase.
Proper care is key to keeping these sheets in your rotation for years.
- Washing the Right Way
To preserve that silky Pima cotton, wash your sheets in cold or warm water with a gentle detergent.
Hot water can cause shrinkage or fade the colors, especially the darker shades like gray or blue.
I use a mild, liquid detergent and skip fabric softeners—they can leave a residue that dulls the fabric’s natural softness.
Wash them separately from towels or heavy items to avoid pilling from friction. Trust me, I learned this the hard way when my sheets got cozy with a fuzzy blanket in the wash.
- Drying with Care
Low and slow is the way to go. Tumble dry your sheets on a low heat setting to prevent weakening the fibers. High heat can make them brittle and prone to pilling. I pull mine out while they’re slightly damp and let them air dry the rest of the way to minimize wrinkles.
If you’re ironing (no judgment, you fancy soul), use a medium setting and avoid scorching the elastic on the fitted sheet. It’s a small step that keeps them looking crisp.
- Stain Removal Hacks
Spills happen—whether it’s coffee, makeup, or your dog’s muddy paws. For stains, act fast. I dab (don’t rub!) the spot with a mix of cold water and a drop of dish soap before tossing it in the wash. For tougher stains like oil, a pre-treatment with a stain remover like OxiClean works wonders.
Just don’t let the stain sit too long, or it’ll be harder to budge. I’ve saved my ivory sheets from a rogue wine spill this way, and they still look pristine.
- Rotation for Longevity
I have two sets of Kirkland sheets, and I rotate them weekly. This gives each set a break and extends their lifespan. If you’re using the same set nonstop, the wear and tear add up faster.
Plus, having a spare set means you’re never stuck with a bare mattress on laundry day. It’s a simple habit that makes a big difference in keeping your sheets fresh.
- Storage Tips
Store your sheets in a cool, dry place to prevent mustiness. I fold mine neatly and keep them in a breathable cotton storage bag to avoid trapping moisture. If you’re tight on space, the extra pillowcases can double as a storage sack for the set.
Just don’t cram them into a tiny drawer—give them room to breathe so they stay soft and ready for your next sleep session.
Comparing Kirkland Signature Sheets To Other Brands
You’re probably wondering how Kirkland Signature 680 Thread Count Sheets stack up against other popular bedding options. I’ve tested a range of sheets, from budget-friendly to premium, and I’m breaking down how Kirkland compares to Casaluna, Bellino Fine Linens, Mellanni, Sheets & Giggles, and California Design Den.
Each brand has its strengths, but let’s see how they measure up to my favorite Costco sheets in terms of comfort, durability, fit, and value.
- Kirkland Signature Vs. Casaluna Solid 400 Thread Count Sheets
Casaluna’s Solid 400 Thread Count Sheets, sold at Target for about $65 for a king set, are a solid mid-range option.
Made from 100% cotton with a sateen weave, they feel soft and smooth, much like Kirkland’s Pima cotton.
I found Casaluna’s sheets to have a slightly crisper texture out of the package, which some might prefer for a less silky feel.
However, after several washes, they started to show minor pilling, unlike my Kirkland sets, which stayed smooth.
Casaluna offers more color options—think rich jewel tones and pastels—compared to Kirkland’s limited four shades.
The fitted sheet fits well on standard mattresses, but its elastic isn’t as robust as Kirkland’s Grip-On corners, so I noticed some slipping on my 16-inch mattress. For $25 less than Kirkland, Casaluna’s a decent choice, but Kirkland’s higher thread count and durability give it the edge for long-term use.
- Kirkland Signature Vs. Bellino Fine Linens Sateen Sheets
Bellino Fine Linens Sateen Sheets are a luxury pick, retailing around $250 for a king set.
Crafted from long-staple Egyptian cotton, these sheets are the epitome of indulgence, with a glossy, buttery finish that feels a touch softer than Kirkland’s Pima cotton.
I slept on a set and was blown away by their refined texture and breathability, perfect for warm nights.
However, Kirkland’s sheets come remarkably close in softness for a fraction of the price. Bellino’s fitted sheet fits snugly, but it lacks the extra-secure elastic of Kirkland’s Grip-On technology.
Color options are similar to Kirkland’s—mostly neutrals—but Bellino’s craftsmanship feels more polished. If you’re after high-end prestige, Bellino’s a dream, but Kirkland delivers nearly the same experience for $160 less, making it the smarter buy for most.
- Kirkland Signature Vs. Mellanni Iconic Collection Sheets
Mellanni’s Iconic Collection Sheets are an Amazon bestseller, priced at around $40 for a king set.
These microfiber sheets are ultra-soft, with a silky feel that mimics Kirkland’s sateen weave at first touch.
I tried them and loved the variety—dozens of colors and patterns to match any decor, unlike Kirkland’s basic palette.
They’re also wrinkle-resistant, which is great if you skip ironing.
But microfiber isn’t as breathable as Kirkland’s Pima cotton, and I woke up sweaty on warmer nights.
After a few months, Mellanni’s sheets felt less luxurious, with slight thinning, while Kirkland’s held strong. Mellanni’s fitted sheet fits well, but it’s not as secure as Kirkland’s on deeper mattresses. For half the price, Mellanni’s tempting, but Kirkland’s natural cotton and durability win out.
- Kirkland Signature Vs. Sheets & Giggles Eucalyptus Sheets
Sheets & Giggles Eucalyptus Sheets, priced at about $130 for a king set, are made from lyocell, a sustainable material known for its cooling properties. I tested a set and found them incredibly breathable—perfect for hot sleepers like my sister, who swears by them.
They’re softer than Kirkland’s out of the box, with a lightweight, almost slippery feel. However, Kirkland’s Pima cotton has a more substantial, cozy texture that I prefer for year-round use. Sheets & Giggles offers a few fun colors, but Kirkland’s four pillowcases (versus two) add extra value.
The fitted sheet fits well, but Kirkland’s Grip-On corners are more reliable on my thick mattress. If eco-friendliness is your priority, Sheets & Giggles shines, but Kirkland’s balance of comfort and affordability keeps it ahead for me.
- Kirkland Signature Vs. California Design Den Everyday Cotton Sheets
California Design Den’s Everyday Cotton 400 Thread Count Sheets, around $50 for a king set, are another budget-friendly contender. Made from 100% cotton with a sateen weave, they’re soft and comfortable, though not as silky as Kirkland’s Pima cotton.
I noticed they wrinkled more than Kirkland’s after washing, and the fabric felt thinner after a few months. They come in more colors than Kirkland, including trendy shades like sage green, which is a plus for style-conscious buyers.
The fitted sheet fits standard mattresses fine, but it slipped on my deeper mattress, unlike Kirkland’s secure fit. For $40 less, California Design Den is a good deal, but Kirkland’s superior softness, durability, and fit make it worth the extra cost.
Why Kirkland Holds Its Own?
Kirkland Signature sheets consistently impress with their blend of luxury and value. They outshine Casaluna and California Design Den in durability and fit, match Mellanni’s softness while being more breathable, and come close to Bellino’s high-end feel for a fraction of the price.
Sheets & Giggles offers a cooling edge, but Kirkland’s cozy Pima cotton and extra pillowcases make it more versatile. For under $90, you’re getting sheets that rival sets costing double or triple, backed by Costco’s unbeatable return policy.
Why Kirkland Sheets Stand Out?
After testing these brands, Kirkland Signature sheets strike a rare balance of quality, comfort, and value. They’re not the cheapest, but they outperform many pricier options. The Pima cotton’s softness, the Grip-On corners’ reliability, and Costco’s return policy make them a no-brainer for most sleepers.
Sure, they lack the color variety of Mellanni or the prestige of Bellino, but for under $100, you’re getting a set that feels like a splurge without the sticker shock. I’ve rotated through my two sets for over a year, and they still feel like the day I bought them.
That’s the kind of value that keeps me coming back.
Frequently Asked Questions (FAQ)
Yes, Costco’s Kirkland Signature sheets are high quality, especially for the price. Made from 100% Pima cotton with a 680 thread count, they offer a luxurious feel, excellent durability, and a secure fit. While some users report rare issues like holes, the majority praise their softness and longevity, backed by Costco’s stellar return policy. I’ve found them to rival sets twice the price.
Kirkland Signature 680 Thread Count sheets average a 4.6 out of 5 on Costco’s website, based on over 20,700 reviews. Users love the softness, fit, and value, though some mention warmth or occasional quality issues. My personal rating? A solid 4.5 for their balance of comfort and affordability.
Kirkland Signature sheets are crafted from 100% Pima cotton, grown in California. This long-staple cotton is known for its softness, durability, and breathability, making it a premium choice compared to standard cotton or synthetic blends like microfiber. It’s a big reason why they feel so luxurious.
Kirkland Signature 680 Thread Count sheets are sateen, not percale. The sateen weave gives them a smooth, silky feel with a slight sheen, unlike the crisper, matte finish of percale. Some users prefer percale for its cooling properties, but I find the sateen comfortable for most nights.
Wrapping It Up: Your Bed Deserves Kirkland Signature Sheets
If you’re on the hunt for sheets that feel like a luxury hotel without the hefty price tag, Kirkland Signature 680 Thread Count Sheets are the way to go.
They’ve transformed my sleep, and I’m confident they’ll do the same for you. From their buttery-soft Pima cotton to their stay-put fit, these sheets deliver comfort and value that’s hard to beat. Don’t settle for scratchy, flimsy bedding—grab a set from Costco and thank me later. Your bed (and your sleep) will never be the same.