The plastic bags are powerful and durable, but a little bit see-via so there isn't a mistaking what is inside of. The bags give a reliable layer of defense when picking up poop and stay intact regardless if applied on tough and pointy surfaces, like concrete and grass. Green Walker https://dogpoopbagsamazon20617.blognody.com/37225466/the-smart-trick-of-dog-bed-calming-australia-that-no-one-is-discussing