Material and durability: Made from high-quality silicone with good elasticity. Wear-resistant and long-lasting for repeated use in water environments. Comfort and fit: Soft, bite-friendly design that is comfortable to hold in the mouth for extended periods. Lightweight and compact so it does not add bulk or take up much storage space. Easy installation: Designed for simple attachment and removal from tubes; fits most common snorkels, diving tubes, and regulator hoses without special tools. Secure grip and leak protection: Textured, non-slip edges provide a better hold in the mouth. Engineered to deliver a reliable seal and prevent leaks during use. Compatibility and performance: Compatible with most standard recreational diving, snorkeling, and scuba regulator equipment. Suitable for use in diving where a durable, well-sealed mouthpiece is required. Practical use scenarios: 1) Recreational snorkeling: Replace worn mouthpieces on a snorkel to restore comfort and a tight seal for clear breathing and longer surface swims. 2) Scuba diving with a regulator: Install on a regulator second stage for a comfortable, leak-resistant connection during open-water or pool dives. 3) Travel and spare part: Carry as a compact spare to quickly swap out damaged or uncomfortable mouthpieces while traveling or on dive trips. What you get: a flexible silicone mouthpiece that is easy to install, comfortable to bite, non-slip, and built to resist wear while maintaining a good seal with common diving and snorkeling equipment.