Lofted lightweight neck warmer for cold weather, made from recycled plastic bottles. PrimaLoft® fleece keeps warmth in and sweat out. Stay cozy and dry in all your winter activities. *Just on Solid Colors. PrimaLoft® Bio™ Fleece is biodegradable and is designed to return to nature. Warm flece fabric provides warmth with an extremely soft and gentle feeling. Designed for protection and comfort. Designed for an ultimate thermal insulation in extreme cold conditions. Temperature range: -20ºC - 0ºC . Made using highly insulating fabrics. This product contains 2 recycled plastic bottles. There is no trick, it's called sustainability! UltraStretch technology: highly stretchable product designed for top comfort and performance.