Place these woolen balls in your dryer to reduce folds and soften tissues without chemicals or perfumes. Reduce drying time and save energy with these reusable drying balls. Why use drying balls? 1. Reduce the drying time by around 30%. 2. Eliminate static electricity. 3. Adjust the linen linen: add a few drops of your favorite essential oil on the ball in the last 5 minutes of drying to add a slight perfume. Coal: White.Ccomposition: Drying ball: 100 % Wool and Bag: 100 % Cotton .Taille of a ball: 7.6 cm. Livrated by 4 balls and a storage bag.