This would be a wonderful set of couples promise rings or wedding bands. This is really a gorgeous set that you will love! When you put the two rings together, they form a heart.It's designed to arc that wear smooth and comfort fit.It's made of stainless steel,so it is hypoallergenic with high resistance to rust, corrosion, tarnishing and requires minimal maintenance in order to keep it looking like new. Genuine Stainless Steel w/ Comfort Fit Design Weight: man: 4.3 g or Woman: 2.3 g Brand Unbranded Main Stone Cubic Zirconia Metal Stainless Steel Type Wedding/Anniversary Band Main Stone Color Clear Metal Purity Unknown MPN Does not apply UPC Does not apply .