SOTAR's ST rafts are made from personally developed Rezcoat, which is a 40 oz.,100% urethane material with a 1500 denier base fabric that is defensively the toughest raft material in the industry. Tested around the world, the ST series boat is stable, durable, and designed with traditional lines well known for distributing weight evenly. STs have a consistent tube diameter throughout the circumference of the boat. For years this has offered significant lift when exiting large hydraulics, a pretty dry ride, and when combined with our I-beam floor the ST has a very predictable level of tracking. The design works so well that we can’t stop building them. Sizes range from 10ft to 18ft to custom.