Liner-less design for athletic shoe comfort, fit and performance Base-less design for maximum control and skier feel Weight-less design for maximum strength to weight ratio TruFit Last: the perfect relaxed water ski boot fit SoftCell Foam: elastic, low density closed cell foam for marshmallow feel that never packs out Ribbed Foot bed with heel traction pad for maximum foot hold Aluminum Base Plates high quality non-plastic baseplate for increased durability