The Chill-Its 6615 High-Performance Bandana Do Rag Is Made With Hi Cool Moisture-Wicking Technology To Keep Workers Comfortably Cool And Dry On Hot Days. The Hi Cool Performance Fabric Wicks Moisture For Quick-Drying, While The Absorbent Terry Cloth Sweatband Prevents Sweat From Dripping Into Eyes. This Low-Profile Cooling Do Rag Can Be Worn Alone Or Under A Hard Hat. One Size Fits Most, The Back Features An Elastic Band That Stretches To Comfortably Fit A Variety Of Head Sizes. To Be Worn Correctly, The Three Pieces Of Fabric Should Also Be Tied In A Knot. Machine Wash As Needed And Hang To Dry. Ideal For Construction, Landscaping, Roofing Or Anyone Working In The Heat. It Is Also A Great Bandana Headband For Running, Hiking And Other Recreational Activities.