Sevylor Specialists 4-Person Inflatable Boat. Extra Strong Inflatable Dinghy For Fishing, Sports, Rapids & Fun!! Sevylor Inflatable Boats Have 4 Air Chambers In Case of A Puncture. Inflatable Rafts/Inflatable Baots Are Loads Of Fun For All The Family. Holds up to 650 lbs PVC inflatable boat with molded oarlocks Thick, durable PVC Sevylor inflatable boat with 4 air chambers Even when one of the four air chambers is damaged, the other three chambers help keep you safe and afloat