• nylon
• Sup pump adaptor:suitable for inflatable boat, kayak, , paddle sup board, etc,air pump adapter
• Pump adapter:made of material for lasting use,air pump 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,air pump adapter,boat adapter
• Air adapter:pump sup with manual air pump or electric pump,air pump adapter
• Boat adapter:use a standard fitting to couple with an air compressor or bike/tire pump,air pump adapter