Ring Snuggies - The Original Ring Adjusters - JUMBO Size Jumbo Ring Snuggies are ideal for girls who wear their boyfriends class ring. Made of a Heavy Quality hypo-allergenic Surgical Grade PVC An instant, economical ring sizing solution, providing a snug fit for any ring on any finger. You will receive one package containing (4) assorted JUMBO ring snuggies. Jumbo Ring Snuggies adjust up to two full sizes.