Sierra Sleep Extra Cooling King Mattress Protector

The Sierra Sleep Extra Cooling Protector is a king size mattress protector built around a soft, moisture-wicking fabric that stays cool to the touch, helping regulate temperature through the night without changing the feel of your mattress underneath.

A quiet, waterproof barrier is worked into the fabric to guard against spills, stains, and everyday moisture. Unlike older-style vinyl protectors, this construction stays soft and silent, so there is no crinkling or plastic sound when you move or shift positions during sleep. The fabric is also designed to resist dust mites, adding a practical layer of everyday protection between you and your mattress.

Fit and Compatibility

• Designed to fit mattresses up to 18 inches thick
• Compatible with hybrid, memory foam, and innerspring mattresses
• Works with adjustable power bases
• Machine washable for easy care

Because the surface stays cool to the touch and pulls moisture away rather than trapping it, this protector tends to suit warmer sleepers especially well, along with anyone who simply wants a fresher, more breathable layer under their sheets. It is cut to lay flat and smooth under a fitted sheet, so it will not add bulk or shift out of place overnight.

A mattress protector is one of the simplest ways to help a mattress keep performing the way it did on day one. It works to block moisture, dust, and everyday wear from reaching the layers of foam and fabric below, which matters most in the early months of ownership while a new mattress is settling in.

Series: Extra Cooling Protector (Ashley model M31004)