3/8" square drive is rated for a maximum torque of 90 ft-lbs

Emergency release cheek pad system

Perforated

transfer front logo art

Lateral side vent for added airflow

Alpinestars - Nucleon Flex Protection Vest K-Type-Horns 3/8" square drive is ratedThe extremely lightweight Level 2 CE and UKCA Nucleon Flex Pro Protection Vest features a highly ventilated hybrid of Nucleon Cell and Nucleon Flex protectors for the optimum balance of force dispersion and flexibility, and a Nucleon Flex Pro divided chest protector, with a soft touch perforated mesh chassis for enhanced rider comfort. The back protector provides full length protection coverage, and has an ergonomically contoured dual zone outer shell