Diameter: 0 in Size: 141.7" x 31.9" x 3.9" This SUP board set is designed for ultimate fun on the water. Sturdy structure: Thanks to the aluminum and EVA structure, increases it's robustness and impact resistance. Easy to Carry and Store: This paddle board set comes with a carry backpack, making it easy to store and transport wherever you want to go. Additionally, the carrying handle on the board makes it convenient to use. Practical design: This board set is equipped with special high-pressure screw valves, it is easy and quick to inflate and deflate. Versatiled: You can take a cruise through oceans, lakes, or rivers, and it's also great for surfing, water yoga, fishing, and other water activities.