Our Premium Certipur-us Certified High Quality Foam Pit Cubes and Blocks provide the utmost protection for your Athletes and Extreme Sports Thrill Seekers Safety by giving the athletes the confidence to train harder and reach their full potential while protecting them from injury with our foam pit cubes. Give your Gymnasts, Acrobats, Ninja Obstacle Course, Extreme Sports, Trampoline, or Skateboard athletes proper cushion for their landings with our foam pit cubes. Also, great replacement for your old foam blocks'. Our foam cubes weigh 1.5 density 45 Ib. We carry four, five, six, and eight inch foam cubes and foam blocks that are colored charcoal, red, blue, lime green, and purple. Our foam cubes have also been used by Fire Departments for training, the Y.M.C.A, and various Gymnastics facilities, Ninja training gyms, Extreme Cheerleading & Dance, Colleges Indoor Long Jump Training, Inflatable Foam Pits, Inflatable Bounce House, Indoor Snowboarding, indoor Skiing facilities, B.M.X facilities, Trampoline parks and Skateboard parks. Foam Pit Cubes will come vacuum packed. Open shipping box Immediately, Remove Foam Cubes from the shipping box. Separate each Foam Cube Immediately, Foam Cubes will start to expand 4 to 7 hours to reach its size and firmness, Allow 2 to 4 days for the foam cubes to recover its Full Original Size and Firmness from being vacuum pack for shipping.