Trion:z Sports Bracelets, Necklaces, Elbow, Knee and Waist braces.
Note on sizes: Sizes: 90% of men wear a medium bracelet and 90% of women wear the small bracelets. The necklaces vary on preference, if you like it loose, then order the next size up , so if you wear a medium bracelet order a large necklace. If you don't want it to hang loose, then order the same size as your bracelet.