rings are made of high quality alloy and acrylic. They are nickel-free, lead-free, cadmium-free, hypoallergenic, great polished, make the surface more smooth and shiny, also safe and comfortable to wear.
Maintenance 1. Please try not to let the accessories get corrosive liquids such as water and lye 2. Please remove accessories before exercising. 3. Please be sure to remove the accessories before going to bed at night, please put the accessories in a sealed package.