The North Face Micro Stretch Neck Cold Slate Free Size Gaiter, Unisex, Photonic, Warm, Weather, Brown,

This neck gaiter is made of Thermolite material, a high-tech fiber blend with photonics, and utilizes the far-infrared energy emitted by the body through the action of special ceramics to warm you to the core. Uses Thermolite for excellent heat retention Highly stretchy material, yet designed to maintain a three-dimensional shape