X-Small: 10" H x 6" Dia; Small: 15" H x 7.5" Dia; Medium: 18" H x 9.5" Dia; Large: 24" H x 11.5" Dia; X-Large: 28" H x 12.5" Dia * Constructed of rugged, clear 20 mil. vinyl * Features a 3-roll closure * Heavy-duty bottom and reinforced side wrap for durability * D-ring for lashing to boats, other packs and bikes