The Strapies are made of 100% Silicone, water resistant (do not dip) and ideal for the most rebellious. They are practical and super easy to put on, their bracelet instantly molds to any wrist. They are available in 6 colors and are recommended from 3 years old to adulthood. The dial is removable, made of metal alloy and laser engraved. Seiko quartz PC21S movement made in Japan. They are a practical and fun accessory that can be used by the whole family.