Semi-Circle Rings: 15000A: 120cm (OD) x 60cm (ID) x 30cm (T) 15000B: 130cm (OD) x 75cm (ID) x 45cm (T) - 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.