Big, strong leak-proof. Extra thick. Made using 40 recycled materials. PE (40 post-consumer recycled), Post-consumer recycled cardboard. These bags are big, strong and leak-proof. Coming in at 22.5 x 33cm they are extra long and thick to protect your hands. Made using 40 post-consumer recycled material, every roll of bags comes on a recycled cardboard core and fits in standard dispensers. UTBT3415