PLUG AND PLAY: Air Chamber Hose same size as Sleep Number and Select Comfort Mattresses. (3/8") Comes with both, (1) female connector and (1) male connector to immediately hook up to your 3/8" valve or hose. HEAVY-DUTY MORE DURABLE: original Euro design of the Income Air Chamber provides a full 6" of air suspension for pressure reduced sleep. The vulcanized process virtually eliminates all seams. The material flows together & becomes a one-piece construction. ECO-FRIENDLY: Made with high-quality natural products that are sleep-friendly such as cotton and natural latex which is soft to the touch and promotes healthy sleep habits. Weight capacity 400 lbs. per chamber. EASY SETUP: made for easy set up for your Sleep Number, Select Comfort, and REM Air System Pumps FROM THE MAKERS OF THE REM AIR SYSTEM (Silver Fish, LLC) THE ORIGINAL AND TRUSTED NAME IN SLEEP PRODUCT REPLACEMENTS. ***Take note that the Eastern King Dual size is slightly different from that of the TWIN-XL size. 2 TWIN -XL sizes put together do not make the correct size for the Eastern King Dual size.