About Halo 2 Headband: ade with Dryline Fabric which is a high performance material that quickly evaporates moisture so you stay dry and comfortable. Includes Halo's water-tight seal which keeps sweat out of your eyes. Non-slip surface keeps band in place. Great headband in a "one size fits all" design. Works great under helmets and hats.FeaturesLightweight, durable and abrasion resistant which will not lose shapeHand or machine washable.