Our Ever ring is a perfect add on to any stackable or wear it on its own. It’s one size fit all. Details: Hypoallergenic Water resistant Nickel free Material: 18K PVD Coating on 316L Stainless Steel Designed for real life, high performance, and zero anxiety. 🔬 THE MATERIAL DIFFERENCE (Why We’re Built Better): Medical-Grade Base: Crafted from 100% 316L / 304 Surgical Stainless Steel. Naturally Hypoallergenic—zero green skin, zero nickel rashes, and zero irritation. 18K Gold PVD Vacuum Fusion: Real 18K gold molecularly bonded in a high-tech vacuum chamber. 10x harder and thicker than standard electroplating. 100% Activewear & Salon-Proof: Sweatproof, showerproof, swimproof, and chemical-resistant. Engineered to survive ocean water, daily showers, workouts, and salon styling products without ever tarnishing or fading. 📏 SPECIFICATIONS & GUARANTEE: Base Metal: Medical-Grade 316L/304 Surgical Stainless Steel Finish: 18K Real Gold PVD Vacuum Plating (High Polish) Durability: 100% Waterproof & tarnish-resistant Hypoallergenic: Yes (Designed for Sensitive Skin) The B&J Promise: Wear it to the gym, in the shower, or in the ocean. tarnish-resistant guarantee.