Tumbl Trak Folding Base Block Red Vinyl and Suede Cover, 3-Feet Width x 4-Feet Length x 15-Inch Height Tumbl Trak Folding Base Block can be added to our Table Top vault to create a progression trainer to help your gymnasts transfer skills to the vault table It is made with high density foam and has a red vinyl cover Use the 3 ft x 4 ft x 15 in Folding Base Block with our Table Top and Cross Supports to easily attach it to your Tumbl Trak for a great tramp vault station Tumbl Traks Folding Base Block can be added to our Table Top vault to create a progression trainer to help your gymnasts transfer skills to the vault table It is made with high density foam and has a red vinyl cover Use the 3x4x15 Folding Base Block with our Table Top and Cross Supports to easily attach it to your Tumbl Trak for a great tramp vault station