The seac hydra is a swim buoy and is brightly colored orange making it highly visible in the water and ensuring you are clearly visible to other water sports enthusiasts. The swim buoy provides just that little bit more safety when swimming in open water. You can easily inflate the swim buoy and attach it to your waist with a cord; while swimming you pull the buoy behind you through the water. Because the swim buoy is brightly colored other water sports enthusiasts sailors and motorboats can see you swimming clearly. Because the buoy is filled with air it floats well allowing you to take a break while swimming; you can safely lean on the buoy to rest for a moment. You can also carry the seac hydra swim buoy as a safety buoy; if you get into trouble you can wave the swim buoy back and forth above the water to attract the attention of other people or water sports enthusiasts. Thanks to the bright color of the swim buoy it stands out well. Additionally you can hang onto the buoy and keep your head above water if you get into trouble. The hydra buoy is a simple efficient and safe product that should not be missing when swimming in open water. The seac hydra buoy is made of 190t nylon with pvc and is brightly colored orange; this makes the buoy stand out well in the water and ensures you are clearly visible. The hydra buoy cannot be used as a dry bag so you cannot store valuables in this buoy. This hydra buoy can therefore only be used as a buoy to increase the swimmer's visibility to stand out or to rest on. In case of emergency you can use the buoy to attract attention and keep your head above water. You cannot store personal belongings dry in this buoy and take them with you while swimming. Dimensions 30x56 cm dry bag capacity - liters weight 300 grams