1' Folding Tumbling Mats are manufactured with 1 3/8" crosslink polyethylene foam. Crosslink poly foam or polyethylene foam is lightweight closed cell foam that is designed for low impact activities. Tumbling folding mats offer safety and protection for activities such as basic tumbling, stretching and also low impact aerobics. Our 1' Tumbling Mats are used for Cheerleading, Martial Arts, Aerobic and basic physical educational training. The 1' Standard Tumbling Mat is constructed as a firm folding panel mat. These mats consist of 1' panels that fold every 2'.