The McDavid lightweight back brace is also adjustable with its dual elastic side pulls and back panel with 5 stays which give additional support. In instances where the back support is applied firmly it can help relieve back pain and improve posture. Sizes overlap due to the stretch of the support. The straps are used to adjust for individual fit. McDavid have designated the lightweight back support as Level II in the range of McDavid Sport Medical products. Level 2 McDavid sports supports are designed for minor to moderate ligament instabilities or pain. These supports and braces offer more protection than simple sleeves. Soft tissue is supported by compression and the device may promote healing through therapeutic heat.