Cool down with this Cool Band! These bands are constructed out of 100% cotton material and feature safe and absorbent polymer cooling crystals inside. Once the polymer is hydrated, the fabric surface of the Cool Band draws in the moisture which then evaporates, resulting in an effective body cooler. This product can be worn around the head or the neck. Ideal during or after a workout. Bands may be customized with a 1 color heat transfer imprint.