How does the cooling work?

The sheet uses IONIC+ technology, which the brand says combats microbes and odor-producing bacteria on the fabric. That treatment is the basis of its fresh, cool feel rather than a phase-change material or gel.

Is it machine washable?

It is a fabric fitted sheet meant for normal laundering. Follow the care label, and expect the IONIC+ treatment to be the part most sensitive to repeated hot washes.

Does it come with pillowcases?

This is a fitted sheet only. Pillowcases and a flat sheet are sold separately, so a full set means buying more pieces.

Will it fit a deep mattress?

It is a fitted sheet with elastic corners. Check the pocket depth against your mattress height before buying, since deep mattresses can pull fitted sheets tight.

Is it better than cotton for hot sleepers?

It targets hot sleepers with a cool feel and odor control, while cotton relies on breathability. Neither has a published cooling rating, so the choice comes down to feel and the antimicrobial treatment.