Features:- The corrugated hose is made of silicone material, easy to bend and convenient to access. - One-way purge valve on the tube plays the role of draining out water and carbon dioxide.- Its dry top has a floating device, closes the opening when the tube submerges under water, and re-opens after the tube comes back to the surface.- According to ergonomics designed silicone mouthpiece, you will feel comfortable when use.- The bottom purge valve allow air to be separated from some of the incoming water and avoid choking on your breath.Specification:Brand: WHALECondition: Brand NewMaterial: TPR + Silicone + PU + PCOptional Color: Blue, Red, Yellow, Black, PinkEntry Type: Dry Dimension: Approx. 48 x 10 cm / 18.9 x 3.94 inWeight: Approx. 176 g Packing Include:1 x Diving TubeNote:1. Color may be slightly different due to different monitor. Please understand.2. Please allow 1-2cm error due to manual measurement and make sure you do not mind before ordering.