Like its cousin the Freezer Zero Bandana, this Omni-Freeze ZERO neck gaiter is the ultimate cooling accessory-with sweat-activated cooling technology, which reacts with sweat to lower the temperature of the material. Built-in Omni-Shade seals out UV rays for supreme protection from the sun. Product Dimensions : 15 cm x 10 cm x 5 cm (L x B x H) Packaging Dimensions : 15 cm x 10 cm x 5 cm (L x B x H)