Features: Make of silicone materials, which have good elastics wear-resistance and enduring. Suitable for Scubas diving. Edges of particles, nonslip. It have good sealing performances and no leakage. Easy to connect to and remove from pipe. Suitable for most ordinary diving snorkeling and regulators. Comfortable and easy to bites. Convenient to carry and not occupy too much storage space. Suitable for diving, vacation, training, swimming, increasing the funny of diving. Specifications: Materials: Liquid silicone Color: Black/Black 1/Black Blue/Black Green/Gray/Gray 1/Gray Blue/Gray Green Length: about 57mm/2.24inch Width: about 49mm/1.93inch Package Includes: 2pcs Silicone Snorkel Mouthpiece note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin