What is a swimmer's snorkel?
Swimmer snorkels are snorkels that run down the middle of your face. I know it sounds kinda weird, but they come with a head strap that will allow you to use them with regular swim goggles. I use mine to help me isolate and concentrate on my stroke. I don't have to worry about my breathing technique. You can also add a cardio cap that reduces your air intake to help strengthen your lungs.