Permanent Liner: This boot comes with a NON removable liner. Non removable liners have the advantage of being smaller for the same size and the disadvantage of not being quite as easy to dry as removable liners.
Backstay: The back of this boot is reinforced for strength and stiffness. It gives you the support you need for any ability level.
EVA Footbed: A standard foam footbed that molds to the shape of the foot with pressure and normal use.
Long Life Tread: Rubber sole that has a high wear, so it will outlast the treks across the mile long parking lots.
PVC/EVA shell/tongue materials: Scientific blend (PVC and EVA are both abbreviations of longer chemical names) offers more durability and comfort than other, uh, less scientific materials.
PVC Upper: The upper of this boot is a flexible PVC plastic, that feels about like a stiff leather. This material is highly waterproof and resists abuse well.
Soft Touch Laces: Softer material used so your hands and fingers don't get torn up while tightening the laces.
Molded Sole: The sole is a molded rubber pattern to give excellent shock absorption while riding and better traction when walking to and from the lifts.
Steel Hardware: The eyelets and other critical parts of the lacing system are made of steel for increased wear.