Bringing all-season versatility to the Momentum, the Momentum AL is designed with adjustable leg loops that let you add layers or adjust fit on the fly—perfect for ice climbing, multi-pitch routes or seasonal drift in waistline. Black Diamond - Momentum AL Harness Bringing all season versatility to the Momentum the Momentum AL is designed with adjustable leg loops that let you add layers or adjust fit on the fly perfect for ice climbing multi pitch routes or seasonal drift in waistline