Included - 10 pcs solid washer balls,4.5 cm acrossMaterial - These laundry scrubbing balls are made of premium solid soft PVC, durable and soft which will not harm clothes and washing machine, good elasticity and wont fade as wellUsage - The balls improve washing greatly by unique convex and concave design, save lot of water and energy.Clothing more fluffy, not twining Separate clothes effectively and soften fabrics naturally.Reusable - High quality washing ball is durable and reusable.10 to 15 balls are ideal for a wash weighing around 10 kilograms Material.Pants coat class hard cloth washing can put 8-10 balls.Laundry Ball could make washing machine and clothes kept rubbing greater impact force.Make more clean clothes washed, but do not damage clothes.