The AIRHEAD CRUSHER 1 Rider Round Water Tube has a 57 inch diameter and is designed for one person. Made of durable nylon material, this water tube is ideal for wakeboarding and waterskiing activities. The Airhead Blast model by Kwik Tek offers a stable and fun ride on the water, making it a great addition to any water sports enthusiast's gear collection. With its high quality construction and reliable brand reputation, this water tube is sure to provide endless hours of thrilling adventures on the water.