Fully drying snorkel mask is equipped with a safety breathing system to ensure that you breathe smoothly. Nice anti-fog and anti-leakage effect, with a 180-degree panoramic view, so that the underwater beautys as far as the eye can see. Small size and light weight, with adjustable elastic headband, easy and comfortable to wear, suitable for all ages, is a nice gear for snorkeling and swimming training, not suitable for scubas diving. Features: Fully drying snorkel mask with separate inhalation and exhalation of the channel system, effectively prevents the mask fogging, bilateral out of breath, smooth breathing. Breathing tube foldable design, easy to store and carry. With cameras mount, convenient for you to record the nice moments underwater, free your hands. Mask edges shape is ergonomically designed, silicone can fit the face well, tightly without leakage, which gives you a nice diving experience. High-quality PC shatterproof mask, strong and has nice durability. 180 panoramic view, underwater beautys as far as the eye can see. Breathing tube is designed with ball valve, when the water enters, the internal waterproof valve effectively prevents water from entering the breathing tube. The bottom of the mask with a one-way drain valve, it can be quickly drained by lifting the heads, simple and convenient. Equipped with adjustable elastic headband, moderate elasticity, easy and comfortable to wear, suitable for multiple age groups. Small and lightweight, widely used, is a nice gear for snorkeling and swimming training, not suitable for scubas diving. Specifications: Color: Black / Blue / Black+Blue / Pink(optional) Material: PC + Silicone Size: S/M, L/XL(optional) S/M Size: Inner Diameter: 170 * 130mm/ 6.7 * 5.1in Outer Diameter: 230 * 190mm/ 9.1 * 7.5in L/XL Size: Inner Diameter: 190 * 130mm/ 7.5 * 5.1in Outer Diameter: 230 * 190mm/ 9.1 * 7.5in Package Size: 260 * 220 * 150mm/ 10.2 * 8.7 * 5.9in Package Weight: 700g/ 24.7oz Packing List: 1 * Snorkel Mask