The Volcano Hat has an earband-style band with a drawcord top for easy venting

This earband features two layers of 200 weight Polartec fleece

88% Polyester/12% Spandex Jersey

These are great as an expedition thermal

Kool Short Sleeve Shirt Size:Large The Volcano Hat has anResearch driven technologies that manage temperature and moisture to maximize an individual's performance and recovery through permanent chemical free made in USA cooling fabrics. Activation steps: 1. Get it wet with water or sweat 2. Wring out excess water 3. Grab at both ends and pull hands apart snapping the fabric (to reactiavate snap again or repeat steps if dry) 88% Polyester 12% Spandex Jersey 547TN Tan 499 547