Features:The heel cups are non flammable and without odor, which is safe to your skin.Its design is making full use of the soft elasticity materail to fit human physiological characteristics, this can provide amazing support and comfort to your feet all day long.Dual density heel cups providing maximum support and shock absorption.Blue area is extra soft for greater cushioning of sensitive areas.Very useful for any prolonged standing or walking activity and sporting activitiesSpecifications:Item Type: Heel PadMaterial: SiliconeOptional Size: M: Approx. 10.5 * 6 * 2.1cm / 4.1 * 2.4 * 0.8inch(Suitable for EU 34-38) L: Approx. 11.2 * 6.5 * 2.2cm / 4.4 * 2.6 * 0.9inch(Suitable for EU 39-44)Package Weight: Approx. 87~97gNotes:1. Please wash in hand and dry naturally, do not expose to the sunlight.2. Please allow 1-3mm error due to manual measurement. Thanks for your understanding.3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. .