Silicon grips your hair and keeps band in place. Stretchy elastic band for comfortable fit. This product is usually dispatched within 3 working days. Delivery is usually completed in 3-5 working days within the UK mainland from dispatch date. If for any reason you wish to return your goods you can do so. UK size: One Size, FR Size: Size, ES Size: Talla Unica, DE Size: Einheitsgröße, IT size: Taglia unica, US & CA Size: One Size.