Handcrafted in the Sunshine Coast | Lightweight Sustainable | Hypoallergenic 925 Sterling Silver | Plastic Free Packaging All Sunny Threads studs are designed with love and careOur lightweight studs are made of sustainable bamboo wood with Hypoallergenic 925 sterling silver backings and secure butterfly clips. These high-quality laser-cut designs are around 1.3cm in diameter and perfect for busy days, messy buns stud lovers live by and love the sea with all its inhabitants, so in order to protect our amazing ocean we will be donating 5% profits to SeaShepard Australia, with every purchase from our ‘Ocean Collection’.