The bib Alpinestars A-4 max offers excellent protection for the chest, ribs and back through its resistant and flexible structure.

A unique ventilation and bio-foam padding give you maximum comfort and fit, it is equipped with removable shoulder guard for versatility and optimal comfort and is fully compatible with Alpinestars Bioni Neck supports. 

• New triple layer chest protector 
• Absorption insert for high levels of ventilation and protection. 
• Presents a new back protector with cellular technology
• Removable shoulder straps for high levels of customization 
• Extended padding to provide greater protection against stones without hindering the movement of the arm. 
• The plastic structure is perforated for maximum breathability and ventilation 
• Panels for additional protection without compromising movement 
• Elastic closure system characterized by a new design, quick and easy to use.
• Padded and thermoformed structure to optimize the levels of comfort and adherence to the body.
• Compatibility with the Alpinestars Bionic collar
• Additional extension of the thermoformed back protector for extended coverage of the lower spine