Adults Full Face Snorkel Mask Scuba Diving Swimming Underwater Dual Pipe Tube UK
【Double-pipe Circulation Breathing】2025 NEW double-tube external respiration snorkel mask. Inhaling from both sides, exhaust from the exhaust valve, breathing more smoothly. S/M for face <3.93-4.7in(10-12cm)-L/XL for face>4.7in(12cm).