These are the ULTIMATE in Double Balloon retention nozzles! This latest versions of the popular Double Balloon Nozzle is EVERYTHING that you've been asking for! The most important feature is that it's made of pure Clear Silicone Rubber. Since Silicone Rubber is much more durable than amber latex and there's NO more worries about 'Latex Allergies' either! If you want the very BEST in inflatable retention nozzles, these are DEFINITELY the ones to order! The outer balloon is the standard 250cc as with the original unit and the inner balloon is capable of 500cc inflation.

The 250cc Balloon inflated is about 2 inches in diameter.
The 500cc Balloon inflated is about 2 and 5/8 inches in diameter.

Inflator Bulbs are sold separately.