Great alternative to your traditional ring. Width: - 5 mm Thickness: - 2 mm Size 5 - 15.7 mm Size 6 - 16.51 mm Size 7 - 17.32 mm Size 8 - 18.14 mm Size 9 - 18.95 mm Is a birthday, weeding, anniversary, or holiday approaching? A 5-pack of lovely ladies silicone rings is a perfectly acceptable and quite affordable gift. This is a new design so even if she already has a silicone wedding band she will love this one also. NOTE: Please check the size chart before purchasing to ensure a perfect match.