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