The Fat Cat Green - Eco Laundry Balls is a great way to keep clothes clean in an eco friendly way. This set is great for anyone with allergies.The eco-friendly Fat Cat Green - Eco Laundry Balls offer a great alternative to conventional laundry detergent. Effective and easy to use, this laundry cleaner saves you money and is good for environment. Just put the wash balls in your washing machine in place of detergent, and they clean your clothes with the progressive ionic technology. Safe for washing bright and dark colors, hypoallergenic and anti-bacterial, these little helpers are great for use around children and people with allergies or sensitive skin. The balls are reusable, free of dyes and perfumes, gentle on fabrics and, unlike soaps or detergents, leave no residue. The kit includes 3 balls, 2 refills and 1 eco-friendly stain remover. Made of plastic.