Customized double chamber inflation hose adapter allowing you to pump the inside and outside chambers at the same time.
 
Complete package of Y-shape adapter and PVC hose.
 
Features:
Customized double chamber inflation hose adapter
To pump inside and outside chamber at the same time
Complete package of Y-shape adapter and PVC hose
Y-Shape: 8.8 x 10 cm 
Hose Length: 24.5 cm / 9.6"