I ordered one size larger than my previous boots and am disappointed. you will be very disappointed after using it the first time. It is extremely important that you make sure the seller is listed on JBLs authorized seller list. Mens shoe sizes have changed over the years so I had to guess. I have used them to carry larger ladders, sheets of plywood, construction materials and all sorts of longer items that wouldnt fit into the car. Holding G-Shift in the default mode changes DPI to a preset which you can customize. Although they arent labeled as noise-cancelling headphones, they do a great job of helping tune out things like airplane engines and lawn mowers. I wear and ordered size 9. It?s like walking on ?furry cement?. It has 3.