Back & Lumbar Support Cushions About the product: Easy to CarryAfter deflating, it can be folded in the storage bag we provide. With size only 30 * 20 * 7cm(11.8*7.8*2.7inch), it is very easy to carry by putting into our bag. The size after inflating is 40*30cm(15.7*11.8inch). Manual Inflation / Deflation We can determine the amount of air charged into the cushion when inflate according to our own needs to make us feel most comfortable. Easy to CleanThe cushion coat can be disassembled to clean, which we recommend hand washing. Disassembly method is as followed:1.Remove the entire inflatable tube;2.Open the zipper to remove the coat. Relieve Waist Pain Long sedentary will lead to lumbar deformity and lumbar pain problem, so Inflatable Lumbar Support Cushion is the best choice for office worker, driver, and traveler, etc. Ergonmic Design Specifically Targets Back Pain- Due to our universal contoured structure, our back support cushions can be placed anywhere along the back of a chair for neck, upper, middle, thoracic, or lower back and spine pain relief. Use this backrest as a posture corrector to help with alignment and relieve pressure while driving your car or sitting on your office chair at work. Ideal for a gamer, truck driver, elderly men or women. Features: 1. Inflatable design, easy to carry, and convenient to use. 2. Washable, and long-term recyclable. 3. With locking belt design, it can be set directly on the seat to use.Our adjustable straps can be secured tightly to the back of the seat so your cushion stays in the desired position and does not fall or slip down the desk chair. 4. Applicable widely. It can be used for all patients with lumbar distraction and lumbar pain due to sedentary. It can support our waist and correct our sitting posture to relieve our waist pain. 5. High-quality materials. The cushion core is made of the environment-friendly TPU high-pressure airbag, which is non-toxic, odorless and durable. The cushion coat is made of high-quality breathable mesh, which is environment- friendly and non-toxic, and is convenient to clean. Packing list: 1 * inflatable lumbar cushion 1 * storage bag Note: Since this product is inflatable, the air pression outside is less than the air pression inside of the built-in air bag. It will slowly deflate with pressure like a balloon, and it is impossible to keep full filled in a long time. Therefore, if the airbag is not full after a few hours' compression during use, it's normal and it just needs to be inflated again. Please understand that this is a physical problem, not a quality issue of the product.