The Head Kaliber 130 MV GW BOA2 is an all mountain beast designed to deliver top-end performance to skiers that need it. Head's double BOA design is intended to provide a uniform, micro-adjustable fit that works in tandem with the shell construction of the boot - optimizing the blend of comfort and performance that boot manufactures have been chasing for decades. Head's Synapse Pro Liner continues to feature Liquid Fit, offering unique customization typically reserved for aftermarket liners in the past.