Measuring roughly the size of a 10 pence piece, one side of the stainless steel capsule remains blank for engraving a special message or initials perhaps (engraving extra, must be arranged in store), whilst the other bears the SOS Talisman logo. Twist off one side of the capsule to reveal an insoluble paper strip where vital medical details can be stored. We would recommend stainless steel or titanium Talisman's for those on medication as these will never tarnish. Strung from a 22/55.5cm stainless steel curb chain.