The Nucleon Flex Plus family of protectors feature a rider-friendly design which adapts to the contours of the rider's body, thus ensuring maximum comfort and protection. Boasting a sleek, low-profile shape, these protectors blend a lightweight, perforated open cell structure with Alpinestars Flex technology in an ergonomic design for maximum levels of movement on the bike. Ergonomic design provides high levels of movement. 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 means the protector molds to the rider's body shape for enhanced levels of comfort.