Silicone: The handy insoles are made from soft silicone, aiming to alleviate discomfort and offer support from all types of footwear. Upgrade: To receive two pairs! Great for kids: Suitable for children's UK sizes 11-12 or women's size 2. Size: 18.5cm x 6.5cm. Shoe insoles: Get a pair of silicone shoe insoles. Easy to use: The insoles simply slide straight into your shoes. Silicone Shoe Insoles | Living Social