Small – 30/Roll – 20" x 22"/51 cm x 56 cm (8 Gallons), Medium – 20/Roll – 24" x 36"/62 cm x 91 cm (15 Gallons), Large – 20/Roll – 30" x 36"/76 cm x 91 cm (18 Gallons), Jumbo – 10/Roll – 38" x 50"/97 cm x 127 cm (46 Gallons)