Tungsten Ring for Men Women Wedding Band 4MM Classic Domed High Polish Comfort Fit Genuine Tungsten Carbide (Cobalt Free) Hypoallergenic and Scratch Resistant,Super smooth and comfort fit Comes with a FREE Ring Box. Great gift for Valentines Day/ Birthday/Father's Day/Mother's Day/ Christmas/ Wedding/ Engagement/ Promise/ Anniversary Jewelry Fast shipping for Prime,Free return and exchange size,30-Day Money Back Guarantee. If you have any question, please post it in the part of "Customer Questions & Answers" below the page