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

Aunique ventilation and bio foam padding give you maximum comfort and fit, it is equipped with removable shoulders guard for versatility and optimal comfort and is fully compatible with Alpinestars Bionic 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
• 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