Portable Cap / Portable Cap

It can be very inconvenient when we have to take several bottles of water at the same time, due to the overlarge volume, besides, sometimes the cap of bottle we drop on the ground carelessly can not be used any more. This situation can be particularly bothering when it happens on the beach, which also causes potential danger when we're having fun.
A belt is designed to connect the cap and neck of the bottle in the “Portable Cap”project, successfully avoiding the mentioned problems. Under the help of the belt, we are able to take many bottles of water at one time, moreover, the bottle as well as it's cap can be recycled simultaneously