This material stays flexible until impacted when it 'hardens' to offer better impact protection and force distribution

it's all coming together

or head strap

In addition to the central hole

29" - front 820g

Fox Union BOA Clip-In Pedal Shoes - EU 45.5 - Black PDP|PLP|Rail Material This material stays flexible untilDIAL IN POWER AND FIT The all new Union BOA Shoes are set to take your mountain bike adventures to new, more adjustable, and sendier levels of "yew!" Get more power to the pedal and customize your fit to perfection with the dual BOA Li2 system featured in these trail ready shoes. Built with robust features including a moulded cap design to protect against rock strikes, the Union mountain bike shoes handles the rigors of trail abuse with ease. With a