For holding my engagement ring in the lab, working out, cooking, gardening etc. Polished silver version, shown with US size 7 white gold ring, 2.4mm wide band. Tried adding my wedding band (2.5mm), would be sufficiently secure if I needed to put both rings on there but the second one does not lie flush. The design would need to be modified to accommodate the width of a wider ring or a wedding set of two rings. This suits my needs as my wedding band is plain and I rarely need to remove it.