WrApzWALES Neoprene Floating Glasses Retaining Strap

It's a nice style and looks good but, the openings for the glasses arms are too small for my Cressi sun glasses

Got as a Christmas gift + is just what was needed, the strap is used on normal reading glasses + isn't to tight around the head but still stops the glasses from falling, very happy.

these are just perfect for my sunglasses

Good