Since this is for Search & Rescue work and Ill be well under 25mph, itll suffice until I can have dedicated LEDs hardwired into the grill and tail lights. 5" wide and 1" thick)I tried to assemble all the parts myself but they didnt fit. I even got complimented on these shoes by a man! Also it?s nice that each ear tips has the base to clip on the AirPods Pro. Weight 190-200. The Shure 1540 is the only pair I have heard that covers the entire spectrum evenly, in a natural way (with natural I mean that a piano sounds like a piano, a wooden string instrument like a wooden string instrument and Jimmy Hendrix sounds like Jimmy Hendrix and a bombastic electronic score sounds bombastic). The sound is decent. It certainly does NOT ?snap on?, nothing ?snap? about it. Only worn them round the house at the moment, to bed them in, and they felt really comfortable. Was always moving and titling until one day It collapsed in the way that was unfixable and all the plastic connections bent and it?s really useless and going to be tossed in the garbage right now I would not recommend this product at all.