I go swimming and diving equipment to buy goggles yesterday, the owner took two. Speed (Speedo) is a single paragraph goggles and single paragraph breathing tube.
These two brands are not serious diving equipment, swimming and floating also make do.
The pipe does not pour into the mouth until it is all out of the water. After diving, the pipe is sure to enter the water. After the normal condition rises, blow out the water in the pipe and breathe.
I'm a professional swimmer. Actually, you don't have to use either of these two. If you are an amateur, you can buy a YINGFA. It works well.
