Product Name: Yoga Block For use as cushioning in inversions, such as the shoulder stand, to support the head in forward bends and for lift in seated twists. . Any general colors are available. . Custom size is welcome. . Edge: Small chamfer 3 ~ 5 mm . Available size: 305 mm x 205 mm x 50 mm , 305 mm x205 mm x 25 mm , 152.5 mm x 205 mm x 25 mm . Material: EVA ( Ethylene Vinyl Acetate) Please feel free to ask us for the Yoga block.