Color: Steel and Black Material: stainless steel Why choose stainless steel: 1. No rust; 2. Not Allergic; 3. Powerful of anti-acid,anti-alkali; 4. No deformation; 5. Do not fade. Function of Magnets: 1. Help to relieve fatigue, improve sleep quality and prevent snoring. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |