Leatt Neck Brace 3. 5Outstanding Protection With 1-Way Adjustability The Leatt 3. 5 Neck Brace offers outstanding protection for new or experienced riders. The flagship product of the brand, Leatt neck braces, is proven to reduce neck forces and neck injuries. The collarbone cut-out keeps your helmet rim away from fragile bones, and the rear strut is designed to break away before applying excessive pressure to the back. The 3. 5 neck brace is extremely comfortable and durable. It is lightweight, manufactured from composite polyamide, and has 1-way adjustability at the rear for a great fit. Stay fully protected and ride with confidence. Features Up to 89% reduction in critical cervical spine injuries Engineered collarbone cut-out to keep your helmet rim away from your most fragile bones Optimal helmet rim striking platform is designed to redistribute neck forces and provide the helmet with freedom of movement Core Flex split rear folding thoracic strut designed to work with the body's natural movements for a more comfortable fit and break away before applying excessive pressure to the back One-way adjustability for the rear to ensure a great fit Sizing Size Small/Medium Large/Extra Large XX-Large Chest (cm)82 - 94cm94 - 110cm110 - 122cm Chest (in)32. 5 - 37"37 - 43"43 - 48" | Leatt | Neck Brace 3. 5 Men's | Size Small/medium In Red | Composite