COMFORTABLE MASSAGE BOLSTER: Relieves stress on the lower back during massage. Place under knee or ankle to help relieve back strain. GENEROUSLY SIZED: pair with full sized massage table. PROFESSIONAL GRADE: Made from quality eco-friendly foam and NATURSOFT 100% PU rayon backed upholstery. DIMENSIONS AND STYLES: 5 different styles, 8 different colors available. Dimensions can be found in the description. WARRANTY: 1 year Warranty from EARTHLITE, the world’s leading professional massage therapy supply company, since 1987.