Greatgymats Large Gymnastics Tumbling Exercise Mat,2" and 4" Thick Folding Gym Martial Arts Mats with Hook & Loop Fasteners for Kids (Multiple Sizes/Colors) The folding gym exercise mat is excellent for gymnastics, tumbling, martial arts, yoga, parkour, pilates, stretching and other general exercise programs. Made of thick firm white eco-friendly high density cross-linked polyethylene (EPE) foam and Durable 18OZ PVC fabric cloth Can be use at home or school. It's a good idea to make it as a birthday or holiday gift for preschool kids and students. This gym exercise mat can be folded into 1 section for easy carry and storage with hook and loop fasteners. Velcro on each side of the mat allows for connection to additional mats for tumbling runs