The ZANheadgear® SportFlex™ Series High Pile Fleece Helmet Liner features a soft yet, durable stretchy shell lined with warm and super soft Cozy Fleece on the inside. This product is ideal for colder climates and has the added benefits of our best selling SportFlex™ fabrication on the outside. Perfect to wear on your head to keep it warm. One size fits most. Heavyweight and machine washable, one size fits most adults. 50+ UV Protection. Materials: 87% Polyester, 13% Elastane.