[Holes for Mounting Magnets] Our caps and storage molds are designed with holes. After curing, the finished product leave holes for mounting magnets, which allow the lid to fit tightly to the bottle body. [High Quality Silicone] All resin molds are made of high quality silicone material, with smooth , high flexibility, easy to demold, is , reusable, easy to clean. [Portable Compact Molds Kit] Including compact lid and storage box resin mold, 18 powerful magnets, 3 Pcs mirrors. [Gifts for Any Occasion] If you want to create personalized gifts for girls, girlfriends, , wife, mother, grandmother, family and other special occasions, such as holidays, birthdays, anniversaries, graduation or weddings, then our mold kit has everything you need to .