Helps support stiff, strained or aching back. Designed with support cushion pads to help target sore, aching muscles without placing pressure directly on the spine. Adjust for customized fit and support. Back panel evenly distributes support. Sleek, non-bulky design will not restrict movement. Ideal for walking, low-impact activities, posture. Breathable material, firm support. L-XL fits 39.0-50.0 in. waist.