These are 100% nylon. These crocheted scrubbies are a great addition to any kitchen and make great housewarming gifts. They’re 3/4” thick and 3.25” wide. You can also use them for cleaning showers, stove tops or whatever you want without worrying about it scratching! You can throw them in the dishwasher to sanitize or throw them in the wash, just lay them out to dry. Each bundle of 10 comes with 5 with one color on top and the other on the bottom and then vice versa for the other 5.