Foam Rings: 06000A: 120cm (od) x 60cm (id) x 30cm (thick) (Small) 06000B: 135cm (od) x 75cm (id) x 45cm (thick) (Large) - All foam modules are made using the highest quality of EPE, PU and XPE foam - Foam modules are made with a combination of HD-EPE and HD-XLPE Foam - Covers are made of Heavy duty double coated nylon PVC covers of 1680 GSM; non-tearing and washable; with carry handles.