Prevents your shoes from becoming out of shape. Lightweight and convenient to carry. [Features] Stretches the shape of your shoes and prevents them from losing their shape. Made of plastic and lightweight, it is very convenient for carrying your shoes on a trip or business trip. [How to use] (1) Insert it toward the toe, bend the spring and secure it to the heel part. (2) If you have a Collonil mark, it is on the right leg.