by Quick answer: SHEEX uses athletic performance fabric (polyester-spandex) that genuinely cools: hot sleepers and night-sweaters love them. The honest catches: the silky feel is "slippery" to some, the fitted sheet can stretch and lump, and there are real customer-service/returns complaints. A specialty tool, not for everyone.
By the MattressNut editorial team · Updated June 2026
SHEEX Overview
Founded in 2007 by two former college basketball coaches, SHEEX adapts moisture-wicking athletic fabric for bedding. The flagship Original Performance set is 87% polyester / 13% spandex, engineered to transfer body heat far more effectively than cotton. Other lines use nylon/spandex or TENCEL (Arctic Aire·MAX). This is a performance product, not a natural-fiber sheet.
SHEEX Specs (what we could verify)
| Spec | SHEEX |
|---|---|
| Type | Performance fabric; Original Performance is 87% polyester / 13% spandex (TENCEL and nylon lines also offered) |
| Price | Premium; ~$179+ for a Queen Original Performance set |
| Trial / returns | 60-night return and exchange; free shipping over $150 (sale items may be non-refundable) |
| Warranty | 1-year warranty against manufacturing defects (tearing/unraveling not from misuse) |
| Where sold | sheex.com plus Amazon, Walmart |
Performance & What Owners Report
For the target buyer, these deliver: repeat owners call them the coolest, best-fitting sheets they've used, even on 17-inch mattresses. The honest downsides: the fabric is silky to the point of slippery for some, the fitted sheet can stretch and form lumps, and there are reports of snagging, first-wash color bleed, and fraying. More concerning are recurring complaints about shipping delays and difficult refunds when buying direct, buying via Amazon or Walmart can sidestep that.
The Saatva Sheets Alternative
If you want cooling without the synthetic, slippery feel, a breathable natural fiber is the cross-shop. Saatva's Organic Sateen Sheet Set ($165–$275) is GOTS-certified organic cotton: Saatva also offers a percale set marked "best cooling" if crispness matters most. You give up SHEEX's extreme heat-transfer fabric, but you gain a natural hand-feel, free shipping, a 45-night trial and a 1-year warranty backed by a more consistently reviewed returns process.
Who Should Consider SHEEX
Hot sleepers, night-sweaters and athletes who want maximum cooling and like a slick performance-fabric feel, and who'll wash on cold/low to protect the spandex.
Bottom Line
The right tool for a specific problem (overheating), undercut by a love-it-or-hate-it slippery feel and direct-order service complaints.
Bottom line: Best-in-class cooling for hot sleepers, but the slippery feel and direct-buy service issues are real.
Shop Saatva Organic Sheets - 45-night trial
Related: our Saatva sheets guide.