Luxury MVLUXURY liners are ideal when trying to take up a little room and add a bit of stiffness into your shells. Available in 3 Volumes: HV (High Volume, thickest), MV (Medium Volume), and LV (Low Volume, thinnest), to accommodate a range of shell fits and providing superior custom fit and comfort. These lace up, tongue style liners are constructed with a dual density foam lay up, feature a roomy toe box for maximum wiggle room, and a thick high density sole