The Smartwool Thermal Merino Reversible Headband is a great activewear piece that packs a warm punch with super soft and cozy merino wool. Its double-layer interlocking knit construction is warm, breathable, and strikingly durable, while its reversible design and colorful finish deliver a complete blend of style and versatility for every mission. Cozy, casual, and oh-so collected, Smartwool’s Thermal Merino Reversible Headband traps the heat without compromising your kit.