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The ExoLite™ Heat Tec Fleece Ear Warmers by 180s has lightweight, low profile behind-the-head design that shields ears while allowing the head to release heat naturally to regulate body temperature. The ExoLite™Heat combines a collapsible exoskeleton frame with triple layer ear piece construction. The microfleece next-to-skin, Thermolite® midlayer and microfleece outer shell cuts wind, wicks moisture and retains heat so the wearer remains comfortable in the coldest weather conditions. Minimalist design reduces weight and pressure on the head. Designed to fit a wide range of head shapes and sizes. • The warmest of the ExoLite Ear Warmer collection. • Behind-the-head design. • Triple layer construction: Outer Shell: Breathable, wind and water-resistant stretch fleece delivers superior thermal insulation and moisture management. Insulation: 100gram Thinsulate™ traps heat, providing lightweight warmth. Next-to-Skin: Breathable, moisture-wicking stretch fleece cups ears for snug fit. • Works with hats, helmets and glasses. • Lightweight (.9oz) and compact (2cm). • Washable, removable ear pieces. • Collapsible, exoskeleton frame for easy storage in pocket, brief case or glove compartment. • One size fits all. Material Contents: Outer Shell: 50% Polyester, 45%Tactel, 5% Lycra® Insulation: 65% Polyolefin, 35% PET Next-to-Skin: 50% Polyester, 45%Tactel, 5% Lycra®