• nylon
• Air adapter:use a standard schrader fitting to couple with an air compressor or bike/tire pump,pump adapter
• Sup pump adaptor:suitable for inflatable boat, kayak, , paddle sup board, etc,air adapter
• Note: it is recommended to inflate the board by hand until it becomes difficult to pump, and then use the adaptor to off the pressure,boat adapter,air adapter
• Pump adapter:made of material for lasting use,air adapter
• Air pump adapter:pump sup with manual air pump or electric pump,air adapter