Yoga Matrix Mat Complete Alignment Symmetry Lines Numbers Measure - Deluxe Extra Thick Extra Long 74'' x 24'' x 1/4" - Slate Get exact position placement for each pose...make note of your comfort zone and practice with continued consistency.. Perform countless variations for each pose with exact precision Keep both sides of your body in symmetry with the other...4 EQUAL MIRROR SECTIONS Easily fix poses to get aligned and symmetrical. Measure distances from one practice to the next