Premium Exercise and Pialtes 1/2" Mat protects your spine from injury in using hard surfaces while exercising. Made of closed-cell foam NBR/PVC construction. Stretchable straps roll up & go. 1/2" x 2' X 6' (12mm x 61cm X 183cm); Extra Thick 1/2"/12mm NBR/PVC Closed-cell foam; Dual textured mat - vertical ribbed and flat texture.