More likely a manufacturing problem. My daughter who is the same age and wears same shoe size could not wear these. nmd r1 tri colour Hes hard on his headphones. Not much good when it’s a present and the child can’t wear them. nmd r1 tri colour I’ve only had these for a week, so I feel that a longer period of ownership and use is necessary to give a more accurate review of the durability of these bands. nmd r1 tri colour I put a piece of non slip material underneath to prevent sliding. People say a heavy load will make the rails hit but there is no chance of that. Whats nice is they were made out of stainless steel so I dont have to worry about them rusting. nmd r1 tri colour It is really loud too which is good for my husband who operates machinery. This product came preassembled.
nmd r1 tri colour