Exalt Tank Covers Fit 68, 70, 72, & 77 ci tanks.  Exalt tank covers have a unique design & material that allows the one size to be used on multiple size fiber tanks.  The Exalt tank cover has a proprietary rubber compound non-stain material that provides superior grip.  This rubber is engineered to protect your bottle while not adding unnecessary bulk or weight.  Exalt also designed their tank cover to have a minimalistic low profile & low weight design. Multiple surface finish design & added thickness at the bottom protects your tank while looking fresh!