This Springbok puzzle keeper set includes a 36" x 48" felt mat, 2 cardboard tubes, and 2 velcro straps. It can accomodate up to 500 pieces. The brand is well-known for their quality products, and the materials used are described as "multi" in the description. Whether you're a puzzle enthusiast or looking for a fun activity to do with family and friends, this puzzle keeper set is a great option.