McDavid 493R Universal Back Pain Support Belt / Strap With Thermal Back Panel The McDavid 493R Universal Back Support features a thermal Neoprene back panel with 6 hard-wearing stays, cool, breathable side panels, and firm elastic side pulls that provide adjustable compression and support. Thermal neoprene back section provides therapeutic heat retention to help relieve pain and promote healing. Key Features McDavid Universal Back Support Helps to relieve lower back painWarm neoprene back panels with 6 stays for back supportBreathable side and front panels for comfortAdjustable side pulls with fastening give additional support Caution: Do not apply over open wounds or if you have a susceptibility to dermatitis. What size do I need? Measure to fit waist size: S = 61cm to 81cm (24inches to 31inches) M = 68cm to 107cm (27inches to 42inches) L = 91cm to 132cm (39inches to 52inches) XL = 117cm to 152cm (46inches to 60inches) Colour Black Size S-XL Model 493 Universal Back Support