Designed for the entry-level 47ci / 48ci steel / aluminum tanks, the Exalt 48ci Tank Cover was developed to provide a low-profile, ultra lightweight protective shell for your tank. The unique shell design allows complete coverage of the bottom of the tank during slides or crawling, but is still able to slip over nearly any tank and be adjusted depending on cylinder orientation after screwing in the tank. – Resilient, non-slip, anti-stain material grips onto your tank and shoulder and keeps it in place. – Minimalist, lightweight and low-profile design – Multiple surface finish design & added thickness at the bottom protects your tank during dives and slides.