Are Costco Sheets Actually Good? (2026 Bedding Quality Review)
Yes — one set is worth buying and the rest of the aisle is optional. The Kirkland Signature 680-thread-count Pima cotton sateen set is the one we keep recommending: smooth, heavy, still holding up after a year of weekly washes, and roughly a third of what Brooklinen or Boll & Branch charge. Skip it if you sleep hot or want crisp percale, because sateen at that weight sleeps warm. Below: how it compares set by set, and where paying more actually buys you something.
Costco sheets: quick answers
Are Kirkland Signature sheets good?
Yes, Kirkland Signature sheets are highly regarded. They feature premium 680-thread-count Pima cotton, offering excellent value and a smooth, comfortable feel compared to luxury brands.
What kind of sheets does Costco sell?
Costco primarily sells Kirkland Signature 680-thread-count Pima cotton sateen sheets. These are known for their quality material and construction, often favorably compared to higher-priced brands.
What are the best sheets at Costco?
The Kirkland Signature 680-thread-count Pima cotton sheets are considered the best at Costco due to their unmatched value, luxurious feel, and durability at a lower price point.
Are Costco 680 thread count sheets good?
Yes, Costco's 680 thread count Pima cotton sheets are very good. They are praised for their smoothness, durability, and a slightly heavier feel, offering a premium option at an affordable price.
2026 Buying Guide
Are Costco Sheets Good? A 2026 Comparison with Brooklinen & Boll & Branch
As someone who’s tested everything from warehouse deals to high-end linens, here’s the honest rundown—where Costco’s Kirkland Signature stacks up against Brooklinen and Boll & Branch.
Heads up: This post contains affiliate links, including Brooklinen. We may earn a commission at no extra cost to you.
Quick Summary
Costco’s Kirkland Signature sheets deliver premium materials and construction at roughly a third of the price of Brooklinen or Boll & Branch. The trade-offs? Fewer color choices, limited seasonal stock, and a slightly heavier sateen feel. But for the price, it’s hard to find a smoother, longer-lasting set.
My Personal Experience
I’ve rotated through Kirkland Signature, Brooklinen Luxe Sateen, and Boll & Branch Signature Hemmed over the past few years, alternating them seasonally. Here’s what stood out:
- Kirkland Signature: After a year of weekly washes, the 680TC Pima sheets still feel smooth with minimal pilling. They’re a touch heavier, which feels cozy in winter. Grip-On corners are a quiet hero—these things stay put.
- Brooklinen Luxe Sateen: I picked up the Luxe set during a sale. The drape and sheen are next-level. They wrinkle a bit more, but the silky feel makes up for it. They’re slightly warmer but look high-end. Here’s their latest pricing.
- Boll & Branch Signature Hemmed: The softest percale I’ve slept on. Breathable, crisp, and cool—the opposite of slick sateen. After two years, they’ve mellowed into that perfect “broken-in” hotel texture. The cost, though, stings.
If I had to assign them: Boll & Branch wins for comfort, Brooklinen for aesthetics, Costco for value.
Comparison Table: Costco vs. Brooklinen vs. Boll & Branch
| Brand | Material | Weave / Feel | Thread Count | Price Range (Queen) | Notable Features | Verdict |
|---|---|---|---|---|---|---|
 Kirkland Signature (Costco) |
100% Pima Cotton | Sateen – smooth, slightly heavy | 680 | $59–$79 | Grip-On corners, easy returns, long-staple cotton | Unmatched value; premium feel under $80 |
 Brooklinen Luxe Sateen |
100% Long-Staple Cotton | Sateen – ultra-smooth, drapey | 480 | $159–$189 | OEKO-TEX certified, deep pockets, 1-year warranty | Luxurious finish; slightly warmer feel |
 Boll & Branch Signature Hemmed |
100% Organic Long-Staple Cotton | Percale – crisp, breathable, matte | ~300 | $229–$279 | GOTS certified, ethically sourced, lightweight | Top-tier comfort for hot sleepers; premium price |
Prices accurate as of September 2026. Costco pricing reflects typical online/in-store range; Brooklinen and Boll & Branch from official sites.
Construction & Fit
- Kirkland: Pima sateen weave; Grip-On corners hold to deep mattresses (up to ~15").
- Brooklinen: Luxe Sateen; double long-staple cotton, tighter weave, slightly shorter fit on extra-thick beds.
- Boll & Branch: Signature percale weave; organic cotton, airy and crisp with reinforced seams.
Buying & Sales Notes
- Costco: Sales often appear during bedding season—expect 15–25% off in rotation.
- Brooklinen: Frequent bundle discounts; best time to buy is during major holidays or anniversary sales.
- Boll & Branch: Rarely discounts more than 15%; limited seasonal offers on select colors.
Final Thoughts
If you want dependable, luxurious-feeling sheets without paying triple digits, Costco’s Kirkland set is a quiet powerhouse. They’re durable, soft, and carry that rare “sleep better tonight” factor. Brooklinen brings hotel-grade polish and brand cachet, while Boll & Branch is for those chasing ultimate softness and sustainability.
My current rotation: Boll & Branch in summer, Brooklinen Luxe for guests, and Costco’s Kirkland for everyday reliability. It’s a mix that nails comfort, quality, and cost across seasons.
Try Brooklinen Luxe Sateen Sheets if you want a more refined drape, or stick with Costco’s Kirkland if you just want premium sleep at a fraction of the price.
Live pricing and current promotions on the mattresses, bases, and sleep tech we recommend.
Shop current dealsKirkland Signature Sheets: The Full Breakdown
Kirkland Signature is Costco's own label, and the sheet line most people mean is the 680-thread-count Pima cotton sateen set (about $40–$60 for a queen, depending on warehouse and season). Here is what that money buys against the direct-to-consumer sets we test. For additional price comparisons, see California Design Den 400-thread-count cotton sateen queen sheets on Amazon or cotton percale alternatives. Compare fiber content, pocket depth and return terms rather than thread count alone. As an Amazon Associate, Yawnder earns from qualifying purchases.
| Spec | Kirkland Signature 680 TC | What it means in use |
|---|---|---|
| Fiber | Long-staple Pima cotton | Pills far less than the 1,800 TC microfiber sets sold alongside it |
| Weave | Sateen | Silky and slightly warm — not the crisp, cool hand of percale |
| Thread count | 680 | Real, but past ~400 TC extra threads add weight, not comfort |
| Pocket depth | Fits up to ~18" | Snug on a 14" hybrid; tight over a mattress plus topper |
| Price (queen) | About $40–$60 | Roughly a third of a comparable Pima set from a bedding brand |
Who Should Buy Them — And Who Shouldn't
Buy them if you want durable all-cotton sheets at warehouse pricing and you like a smooth, slightly warm sateen finish. Skip them if you sleep hot or you specifically want percale crispness — sateen traps more heat, and no thread count fixes that. Hot sleepers should look at a percale or a cooling weave instead.
One durability note from our own laundry testing: the sateen face develops a faint sheen loss after roughly 30 washes, and the fitted sheet's elastic outlasts the fabric. That is normal for the price, not a defect.
Sleep hot? Sateen is the wrong weave — start here instead.
Compare cooling sheet sets on saleWant to compare current availability and pricing on Amazon?
Compare value sheet sets on AmazonAs an Amazon Associate, Yawnder may earn from qualifying purchases.