Juperbsky Folding Exercise Gym Mats - Gymnastics Tumbling Martial Arts Mats Ideal for gymnastics, cheerleading, martial arts, yoga, tumbling, Pilates, stretching and other uses; Non-toxic, non-absorbent, mildew-resistant, and easy to clean Made of durable and superb 18oz. vinyl cover and cross-link polyethylene foam core for quality guarantee,right firmness and elasticity; Industry standard and never fade 4-side velcro-style fasteners allow for connection to additional mats for tumbling runs or large workout areas Double stitching and reinforced corner prevent foam from running out and ensures long time use;Supreme workmanship and superior material; Folded for easy carry and storage Extended dimensions: 4'x8'x2"; Meet CPSIA requirements for Lead and Phthalates