Gray Self-Adhesive Foam Hanger Non-Slips are a great accessory that can be added to any existing hanger. Non-slips are for use with garments that are prone to slippage on a traditional hanger without them. A foam strip with self adhesive backing is applied to each end of the of a dress hanger arm. Non slips are an excellent choice for clothing such as knitwear and lingerie. Sold on a Roll of 1600 individual strips.