Ergonomic adaptive design provides broad coverage while allowing natural knee movement Open ventilated structure promotes airflow and helps manage heat during riding Slim low profile construction keeps the protector discreet inside compatible gear Flexible Nucleon Flex Pro technology molds to the rider's body for improved comfort Lightweight construction supports all day wear without restricting mobility Certified to EN 1621-1 2012 Level 2 impact protection standards The Alpinestars Nucleon Flex Pro Knee Protector is engineered to deliver high-level impact protection with the flexibility and comfort riders need for everyday riding. Built with innovative Nucleon Flex Pro technology, this knee protector features a lightweight, ventilated construction that promotes airflow while maintaining a slim, low-profile fit inside compatible riding gear. Its ergonomic design allows for natural movement and broad coverage, while the adaptive structure molds to the rider's body for improved comfort and a secure feel. The open design enhances ventilation to help manage heat, and the discreet profile keeps the protection unobtrusive when off the bike. Certified to EN 1621-1:2012 Level 2, the Nucleon Flex Pro Knee Protector delivers advanced protection in a flexible, rider-focused design.
