(5 Pack) Oldhill Sports Headbands - Versatile Uses As Sweatband, Balaclava, Neck Gaiter, Bandana, Helmet Liner, Mask and More One size fits most: Measures 9.5" x 18" / 50 x 25 cm (+/-2 cm) (Not Stretched) Microfiber polyester: 100% breathable, moisture wicking, wind resistant and dries quickly Seamless tubular design: no pressure points, no headaches, not hemmed or fraying All in one: Versatile uses as face mask, neck gaiter, balaclava, bandana, cap, helmet-liner, wristband, headband or scrunchy and more Easy maintenance: Machine washable, easy cleaning, elasticity can be maintained through years