Kirkland Signature 680 Thread Count Pima Cotton sheets are highly regarded for their durability, softness, and value, boasting thousands of positive reviews. While they are an excellent, budget-friendly alternative to high-end luxury bedding, hot sleepers may find them too insulating, and some users note they can feel wrinkled or have an initial odor. Overall, they are a widely recommended, safe purchase backed by Costco's strong return policy.
Video reviews
Pros
- Excellent value for money compared to luxury brands
- Durable construction with high-quality Pima cotton fibers
- Grip-On corner technology keeps sheets securely on the mattress
- Includes four pillowcases (in most sets)
- Orientation labels make bed-making easier
Cons
- Can feel too warm for hot sleepers
- Limited color selection (only four colors)
- Some reports of an initial odor that requires washing
- Can feel wrinkled or scratchy to some users
- Some users find them too thick/insulating
⚠ Red flags
- Some reports of sheets smelling unpleasant out of the packaging
- Possible "crinkly" or "loud" sound reported by some users
- Not ideal for those who sleep hot due to the tight weave and cotton thickness
Safety signals
Facts
Better options
Why switch: Consumer Reports ranked these slightly higher than the Kirkland set due to a better fit.
A cheaper, popular alternative that is more breathable for hot sleepers, though it uses synthetic materials.
Based on 8 sources
Kirkland Signature (Costco) Pima Cotton (680 TC) Sheet Review - Consumer ReportsThe Bedroom Essential You Should Be Buying From Costco And WhyCostco Kirkland-Brand Home Items That Are & Aren't Worth Buying, According To ReviewsWho Makes Kirkland Sheets In 2026? (All You Need to Know)Thousands Of 5-Star Reviews Prove This Costco Kirkland-Brand Home Essential Is Worth It100511905Costco vs. Amazon Sheets 2025 ReviewKirkland Signature Sheet Set 6 Piece King | Costco AustraliaBuyer reports
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