Features: Small size, light weight, unique spiral level design,so that a more aesthetic appearance. With a high elasticity, high toughness, wear-resistant PVC medical slurry, feel good, uniform thickness, high flexibility, and do no harm to human body. Using an independent inlet / outlet system design, avoid secondary pollution caused by suction back when imports and exports are put together. By rotational molding design, longer product life. A PVC gasket is embedded in the valve inside, its purpose is to let the balloon does not leak when puffed air in,Can be inflated, no buffer. faster than the metal gasket suction effect Thickening of the neck done deal, so scratching the neck mirror will not occur caused by squeeze the product Color: Red