As the SMX Air Jacket has been designed to provide premium ventilation

fit and feel

and features extensive race-derived features and materials

providing expansion when the airbag inflates but also offering a high level of anatomical performance and a superior fit when riding without the system fitted

a dura liner shorts black YGroup_3728324 As the SMX Air JacketAlpinestars essential go to shorts for all MTB activities, the A Dura Liner Shorts offer an added level of stretch for freedom of movement on the bike. The shorts have been engineered and constructed to provide superior durability and the ruggedness needed for the mountain biking environment. The shorts also have a secure double snap closure and side waist adjuster to personalize your fit. To store your personal belongings, the shorts have 2 zippered,