-Size: The ring size is adjustable. Therefore, it can be adjusted to fit all sizes. -Material: The product material is brass. -Durability: With proper and careful use, it is resistant to tarnishing and color fading. -Usage Recommendation: To maintain the shine and plating quality of your product for many years, we recommend avoiding direct contact with perfume, water, detergents, and chemical substances. -Skin Warning: The reaction of each skin type to metals and plating may vary (depending on the pH value). -Wishing you healthy and happy days using it.