ALPINESTARS MX SIZING CHART Alpinestars Nucleon Flex Plus Elbow Inserts The Nucleon Flex Plus family of impact armor features a rider-friendly design that adapts to the contours of the rider’s body - ensuring maximum comfort and protection. Nucleon Flex Plus family of protection inserts feature a rider-friendly design, which adapts to the contours of the rider’s body Ensures maximum comfort and protection Boasting a sleek, low profile shape, these protectors blend a lightweight, perforated cell structure with Alpinestars Flex technology in an ergonomic design for maximum levels of movement on the bike Open design structure ensures high levels of airflow and ventilation Slim design gives a low protector profile, meaning the protection appears discreet in the garment off the bike Adaptive design molds to the rider’s body shape for enhanced levels of comfort
