The Blackstrap Tube Kids Neck Warmer has a dual layer that provides generous warmth. The Kids Tube has an ergonomic design to specifically fit children, 360 degrees of dual layer protection and 4-way stretch fabric for added mobility/ helmet compatibility. This neck gaiter is UPF (UV) Rated for sun protection and has a seamless inner lining that is highly breathable for all changing weather conditions. Recommended Fit, Ages 2-7, Helmet Friendly/ Ergonomic Fit, Synthetic, moisture wicking and lens safe fabric, 360 Protection/ Comfort fit, Machine Washable, Material: Polyester/Stretch Blend, Warranty: One Year, Material: Synthetic, Type: Neck Gaiter, Model Year: 2021, Product ID: 434878, Model Number: BS JR TUBE BK, GTIN: 0817866015792