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.
Costco's Kirkland Signature sheets offer premium 680-thread-count Pima cotton at a fraction of the cost of luxury brands like Brooklinen or Boll & Branch. They are best for value-conscious buyers seeking durable, smooth sheets but may not suit those desiring numerous color options or a lighter feel. The Grip-On corners are a significant practical benefit.
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 October 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.
| 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 sale