Do these sheets really sleep cool?

Many hot sleepers say yes, but the polyester blend traps heat for some. If you run very warm, cotton or linen may suit you better.

Will they fit a deep mattress?

Yes. The King and Cal King set fits mattresses up to 20 inches deep, and the spandex stretch helps it stay tucked.

How do they compare with cotton sheets?

They feel smoother and stretchier and resist wrinkles, but cotton breathes better for some sleepers and lasts longer for others.

What comes in the set?

A fitted sheet, flat sheet and two king pillowcases. Cal King buyers use the same set.

How should I wash them?

Machine wash cold with like colors and tumble dry low. Skip fabric softener and high heat to limit pilling and static.

Do they work on adjustable beds?

Yes. The stretch fabric moves with the mattress and holds the corners better than most woven sheets.

What do buyers say about the SHEEX Original Performance Cooling Sheet Set, King/Cal King?

Rated 4.1 out of 5 from 11,000 ratings.

SHEEX Original Performance Cooling Sheet Set, King/Cal King

Best price now

$213.85at SHEEXChecked 5 h ago

Prices are checked against each store and labelled with when.

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Sheex discount code →

SHEEX Original Performance Cooling Sheet Set, King/Cal King

Best price now

$213.85at SHEEXChecked 5 h ago

Prices are checked against each store and labelled with when.

Visit SHEEX

Sheex discount code →

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Price facts

Lowest price today: $213.85 at SHEEX (checked Nov 10, 2026).

Our take on the SHEEX Original Performance Cooling Sheet Set, King/Cal King

The SHEEX Original Performance Sheet Set is a four-piece knit set made from 87% performance polyester and 13% spandex, sold as a cooling alternative to cotton. The stretch fabric fits mattresses up to 20 inches deep, and the brand claims it resists wrinkles, pilling, shrinking and fading. It suits hot sleepers and adjustable-bed owners who want a smooth, stretchy feel rather than crisp percale. Against cotton and linen rivals it wins on stretch and fit but draws mixed feedback on warmth and long-term durability.

Best forHot sleepers who want a cool, smooth feelAdjustable bed and extra-deep mattress ownersCouples who move a lot in bedAnyone tired of sheets popping off corners

Pros

Stretch knit grips the mattress and stays tucked
Fits mattresses up to 20 inches deep
Smooth, silky feel that many sleepers find cool
Wrinkle-free out of the dryer, no ironing
Machine washable and holds color well

Cons

Polyester blend can sleep warm for some
Thinner than cotton and shows wear over time
Static and cling reported by some owners
Silky feel is slippery for some sleepers
Pilling reported after repeated washes

SHEEX Original Performance Cooling Sheet Set, King/Cal King prices at every store

SHEEXNew
In stock
$213.85Checked 5 h ago
Visit SHEEX

SHEEX Original Performance Cooling Sheet Set, King/Cal King price history

Lowest price we've seen: $213.85 on Nov 10 at SHEEX. Tracked across 1 store since Nov 10.

What reviewers say

4.1 / 511,000 ratings

Ratings average about 4.1 out of 5 across roughly 11,000 reviews, with most buyers praising the cool, silky feel and the stretchy fit that stays on the mattress. Complaints center on warmth, thinness and durability after months of use.

What people mention

CoolingMixedMany buyers find the fabric cool and breathable, while others say it traps heat.
FitPraisedOwners like that the stretchy deep pockets stay on thick and adjustable mattresses.
DurabilityCriticisedSome report pilling, thinning and wear after months of washing.
FeelMixedThe silky stretch is loved by some and called slippery by others.
WrinklesPraisedBuyers say the set comes out of the dryer smooth without ironing.

Specifications

Fabric Type: 87% Performance Polyester / 13% Spandex
Thread Count: 600
Pocket Type: Extra Deep Pocket
Max Mattress Depth: 20" (King/Cal King)
Age Group: ADULT
Care Instructions: Machine Wash
Sheet Highlights: Breathable, Lightweight

Questions and answers

Do these sheets really sleep cool?: Many hot sleepers say yes, but the polyester blend traps heat for some. If you run very warm, cotton or linen may suit you better.
Will they fit a deep mattress?: Yes. The King and Cal King set fits mattresses up to 20 inches deep, and the spandex stretch helps it stay tucked.
How do they compare with cotton sheets?: They feel smoother and stretchier and resist wrinkles, but cotton breathes better for some sleepers and lasts longer for others.
What comes in the set?: A fitted sheet, flat sheet and two king pillowcases. Cal King buyers use the same set.
How should I wash them?: Machine wash cold with like colors and tumble dry low. Skip fabric softener and high heat to limit pilling and static.
Do they work on adjustable beds?: Yes. The stretch fabric moves with the mattress and holds the corners better than most woven sheets.
Where is the SHEEX Original Performance Cooling Sheet Set, King/Cal King cheapest?: At SHEEX, for $213.85, as of our latest check.
What do buyers say about the SHEEX Original Performance Cooling Sheet Set, King/Cal King?: Rated 4.1 out of 5 from 11,000 ratings.

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Set

Yes

Durability Attributes

Wrinkle-Free, Don't fade, Don't pill, Don't shrink, Don't wrinkle