The Nike Streakfly is all about the speed you need to take on the competition in a mile, 5k or 10k race. Low profile with sleek details, it feels like it disappears on your foot to help you better connect with the road on the way to your personal best. Weight: Approx. 185 g (Men's size 10) Heel-to-toe drop: 6 mm These were only worn a few times and I am selling them because they were too narrow for my husband’s wider feet. Other than that, he loved them. They are extremely light weight.