Relieves joint pain and reduces inflammation: The sacroiliac belt helps stabilize the sacroiliac (or "SI") joint that is hypermobile or inflamed, and reduces pelvic, lower back and / or legs (symptom of sciatica) caused by SI joint dysfunction. We strongly recommend that you wear the SI waistband day and night for at least two weeks. Lightweight and durable: The perforated neoprene used in the inner waistband is lightweight, breathable and pilling resistant. Designed to be worn comfortably day and night and the slim design is low profile and easily concealed under users clothing. Make sure you don't overtighten the belt and wear it on your lower back, which can make it invisible while doing your daily activities. Non-slip back support belt: the sacro- iliacus with unique curved comfort of the belt gives your body the extra flexibility and comfort to be worn at all times. Non-slip silicone strips on the inner waistband prevent the waistband from sliding up and down. The SI belt can stay in place to maintain pain relief during light physical activity, but vigorous exercise is discouraged during the recovery period. Double adjustment and maximum comfort: the articulated SI belt is designed to be worn for long periods of time, which is key to recovery and pain relief. The wraparound "double belt" design provides controllable compression and the secondary straps allow you to customize the amount of additional compression needed on sore or inflamed areas. Breathable fabrics allow air and moisture to pass through.