Alpinestars A-4 Max Chest Protector Size:X-Small/Small X-Rings have greater sealing surface

X-Rings have greater sealing surface and less friction than O-ring chains

Stainless steel bolts and aluminum washers

Custom adjustment of temperature trigger point

Fast and easy installation

Bikes with a large offset are easier to handle

Alpinestars A-4 Max Chest Protector Size:X-Small/Small X-Rings have greater sealing surfaceFeatures a new Cell Technology back protector. Removable shoulder pads for customizable use. Extended padding to offer more protection against tire roost without obstructing arm movement. The protector plastic shells are perforated for maximum breathability and cooling ventilation. Adjustable elastic strap incorporates thermoformed perforated rib protection panels for high levels of protection without compromising movement. Elastic closure system