Lifebuoy "Elastic" PVC is used as a ship rescue device. It is intended for operation on floating craft of river fleet and small vessels. The shell is made of light elastic material of bright color with retroreflective stripes. This is necessary for the circle to be visible on the water in any weather and time of day. Sturdy sewn-on trackers allow you to comfortably stay in the water for a circle to two people.