Double Sealed Borders: All REM AIR System Chambers are constructed with a 1.25" seam and reinforced with another 1.25" seam for heavy duty strength. Our double sealing process creates a more reliable support system for longevity and years of hassle free use. Cross Box & Baffle Design: REM Air System Chambers feature this design to evenly support the body from head to toe, side to side, even at the edges of the chamber regardless of your sleep number level for the ultimate in comfort. Heavy Duty and kink resistant hoses mean easier installation and more responsive inflation process. In addition our kink resistant hoses will improve pump life and offers improved comfort adjustment. Will also include original REM Air System Quick Lock Connectors: Easy to use connector allows you to instantly hook up your hose to your sleep number, select comfort pump and REM Air System Pump. Your easy connectors will give a sure tight seal over your valves. Pressure Valve Seal with every connector: The REM Air System Pressure Lock connector seal allows the user to disconnect the mattress hose from the compressor without losing air. Need to move that bed? No problem, you will be able to disconnect your mattress with ease and not lose your sleep number level. Need two air chambers? Buy two and receive a quantity discount.