Hans Clebsch, (Hornist in the Cleveland Orchestra) has designed a hand strap that won't stretch! Other models (by other makers) I have had in the past were made of a much thinner quality leather which would stretch to the point of having to unsolder, and move the anchor to which the handguard attaches. These Handguards have 5 eyelets which allow 6 different positions of the guard on the anchor (which must be soldered to your horn) - so you KNOW you'll find just the right one for your horn and hands.