K3 Summer Snorkeling Mask Diving Mask Snorkel Mask with Dual Free Breathing System for Adults Black and Blue

Description:
The K3 snorkeling mask is crafted with a patented respiratory system that separates the inhaled air from the exhaled air, without carbon dioxide accumulation in the snorkeling mask. The fresh air enters through the double breathing tube and the air breathed out by the snorkeling diver is exhaled through a one-way valve at the mouth. This mechanism ensures that the oxygen concentration in the snorkeling mask is basically the same as that in the air.
[Adjustable Elastic Band] The advanced adjustable dual-elastic comfortable drawstring system guarantees your optimal compactness and comfort while enjoying several hours of snorkeling.
180 Degrees Large viewing area lets you enjoy undistorted visibility and see breathtaking sights under the water clearly.With detachable GoPro Mount(GoPro is not included),can easily connect your camera to capture the movement around you in hands-free.
Leakproof, durable silicone lining can form a comfortable watertight seal, make it safer to wear, and can easily drain the water to escort you to float Dive trip.

Specifications:
Material: ABS+PC+silicone
Size: Measure from the bridge of your nose to the base of your chin
S/M fits 10cm to 12cm
L/XL fits more than 12cm

Package Contents:
1 x Diving Mask