The lifeguard tube measures 39" long by 5.75" wide by 3.3" thick and is made of multiple layers of high viscosity vinyl, minimizing punctures and tears. The rounded edges also increase durability, and tapered ends reduce drag, making it easier to pull through the water. This lifeguard rescue tube features "GUARD" lettering on the front. This Lifeguard Tube is 39" in length 66" heavy-duty towlineNBR foam, or nitrile butadiene rubber foam, is widely used in the manufacturing of lifeguard rescue tubes due to its unique properties. Here's why it's so valuable for this application: Durability: NBR foam is known for its excellent durability and abrasion resistance, making it ideal for use in harsh, outdoor environments where rescue tubes are often employed. Water Resistance: This type of foam does not absorb water, which is critical for flotation devices. It helps the rescue tube stay buoyant and effective during water rescues. Chemical Resistance: NBR foam is resistant to oils, fuels, and other chemicals, which ensures that it does not degrade easily when exposed to sunscreens, body oils, or chemicals found in pools and natural bodies of water. Comfort and Grip: The foam is soft and flexible, providing comfort to both the rescuer and the rescued. Its texture offers a good grip, even when wet, which is crucial during a rescue operation. Closed-Cell Structure: NBR foam has a closed-cell structure, meaning its cells are enclosed and do not connect with each other. This structure prevents water from penetrating the foam, further aiding in its buoyancy and making it easy to clean and maintain.