Extensive, advanced poly fabric stretch inserts on the chest, underarm and rear shoulder for an optimum fit. Perforated padded panels integrated into main shell and sleeves for an improved fit. Hook and loop waist adjustment for an optimized fit. Multiple internal compartment pockets feature a hook and loop closure for additional security. Interior waterproof wallet pocket for safe storage of documents/electronics. Waist connection zipper allows attachment to Alpinestars riding pants. Rear of the jacket is elongated for enhanced coverage when riding. Snap-button system to integrate the Level 2 Alpinestars Nucleon back protector. Alpinestars Nucleon Flex Plus removable internal shoulder and elbow protectors ensure protection against impacts while being extremely flexible.