For rough conditions Whether its for kite or windsurfing, surfing, or for professionals on duty. Just carry it stowed in its pocket with its hip belt or directly attached to your harness. Now you can concentrate even more on this very moment. Pull the trigger and the yellow Restube buoy inflates within seconds. Restube extreme provides enough buoyancy (75N) for adults, just lean over it to lift your head out of the water. Wave with the buoy to catch attention or drag it behind you. You also can dive through waves. You can share the buoyancy with others, which makes it the ideal companion in open water. It is reusable by screwing in a new original 16g CO2 cartridge and easy to repack. Features: Full restube function Buoyancy 75N (~7.5kg) Buoy length 65cm Buoy diameter 13cm Up to 200 releases Inflatable also with mouth valve Extra robust buoy material Extra robust bag material Robust splint closing system Flexible equipment mounting (harness, belts, holster, ...) Horizontally and vertically mountable at belts up to 7cm Belt included (120 x 3 cm), you can retrofit the "positioning bar" (not included) Compatible with RESTUBE READY products The trigger also serves as a whistle Zipper compartment (not waterproof)