Premier Wood series snowskates are high grade quality snowskates developed for significant riding and major fun. Premier Wood series snowskates are constructed with pushed wood laminates. A black foam center sheet covers the leading with 7mm at the edges and 4mm at center to create a concave. The bottom of the snowskates have a rough textured layering with five divots running the length of the board to make riding smoother and add sculpting ability.o Wood Laminateo Concave center sheet with 7mm edges and 4m centerDimensions: o 38" LengthIf you have any more concerns, call me. Willy .