The phrase "waterproof design" refers to something that is made or built in a way that prevents water from getting inside or causing damage.
Sentences with «waterproof design»
It has a range of almost 1,000 feet and a totally waterproof design made to handle the great outdoors. (geekwrapped.com)
Most importantly, the rugged eReader features waterproof design. (gadgetsin.com)
The cloth training pants do come in waterproof designs, as well as there are waterproof covers that can be placed over the cloth training pants too. (pottypatty.com)