The Leatt 4.5 Neck Brace is independently lab and rider tested, proven to reduce neck forces and transfer impact load away from the fragile bones in the neck. Stepping up from the 3.5, the 4.5 adds two-way rear adjustability, a folding CoreFlex thoracic strut, and a composite matrix platform for more efficient force reduction. CE certified and built for serious riders. Key Features Collarbone cut-out — engineered to keep helmet rim away from the most fragile bones CoreFlex split rear folding thoracic strut — works with the body's natural movement and breaks away before excessive pressure is applied to the back Optimal helmet rim striking platform — redistributes neck forces and provides helmet freedom of movement Composite matrix platform — efficient reduction in neck forces 2-way rear adjustability — superior custom fit vs. the 3.5 Sculptured split front — improved comfort and fit Injected, durable, easy-to-clean foam padding CE tested and certified as Personal Protective Equipment (89/686/EEC) Protection Data Up to 89% reduction in critical cervical spine injuries* Collarbone injuries up to 45% more likely without a neck brace* *Independent moto motorcycle study by Action Sports EMS Product Details Brand: Leatt Model: Neck Brace 4.5 Color: Stealth Available Sizes: S/M, L/XL Weight: From 575g (1.3 lbs) Material: Composite matrix SKU: 1023050200 (S/M), 1023050201 (L/XL)