The Align surface with SRT comes with firm borders and a raised sleep surface. It is also a unique multi-zone surface that provides differing immersion levels that match the contours of the body. There is one piece of HR foam at the torso, with 4” square cuts in the foam under the sacrum, and 2” square cuts at the foot to release the surface tension and ensure excellent envelopment (see pics below). The foam density and weight capacity are the differences for our Align & Align Bariatric options.