Trainer Armour Big Toe Hole Preventer is a reinforced self-adhesive patch and applicator system that prevents your big toe wearing a hole in your expensive trainers, running shoes or fabric footwear. Don’t replace expensive footwear because of big toe holes, fit Trainer Armour Big Toe Hole Preventer patches to stop the holes appearing. Quick and easy to apply without any mess or fuss. Suitable for US shoe sizes from 4 up to 15.