The BTTLNS Poseidon 1.0 saferswimmer swimming buoy 28 litres increases your visibility when swimming in open water thanks to its bright colour. The inflatable swimming buoy is also ideal for storing your equipment. Since its launch in 2016, the product has received many fantastic customer reviews and is extremely popular with open water swimmers around the world. Swimming runners that alternate between swimming and running again can easily take the swimming buoy in your hand when running. The BTTLNS safety buoy has two air chambers. These must be inflated once the training equipment has been stored in the dry bag. To ensure maximum safety, this saferswimmer has been revised and now has a rescue whistle that allows you to send an emergency signal quickly and easily? For all occasions. The Poseidon Saferswimmer also features a reflective print that provides additional safety and visibility.