This is the Atomic Aquatics Color Comfort Mouth Piece for Scuba Diving Regulators Features: Extreme comfort Bright colors Easy installation Great to keep as a back-up! Mouthpiece available in variety of colors The comfort mouthpieces come in 7 different colors, so you can personalize your regulator. It&';s extremely comfortable yet durable, due to its silicone materials and its small size which makes for a comfortable fit. It&';s a great idea to keep one in your save-a-dive kit, just in case!