The Align-Pilates mattress converter turns any A2 Series Pilates reformer into a completely flat bed for use with the half-Cadillac tower or if you would like to use convert your Pilates reformer into a matwork station to increase the versatility of your Pilates Studio space. The mat converter works in conjunction with the platform extender. Specifications Construction: Ply Board with anti-slip feet. Top-quality EVA padding for durability and excellent memory and upholstered in abrasion-resistant vinyl. Dimensions(L x W x D): 46.65" x 26.38" x 1.97" (118.5 x 67 x 5 cm)