These were bought new about 8 months ago. They have ONLY been worn inside on exercise mats roughly 40 times for 30 minutes. The mid sole drop just didn't work for my feet because of some old injuries. Top material is very breathable and the shoe is very light. They have the Brooks Cushion technology for a more plush experience. They do have slight wear and tear on the outside, mostly from taking on the color from the black exercise mats; but minimal wear and tear in regards to support and interior. Heel 36mm Toe 24 mm Heel Drop 12 mm Midsole Drop 12 mm Specs Designed for Road Weight 10.2oz / 289.2g A smooth and floaty-feeling run thanks to plush cushioning designed to help you enjoy and savor your run. Smart Support Did you know support doesn’t just refer to arch support? GuideRails® support aids your feet, knees and hips. Soft Cushioning DNA LOFT is our soft cushioning, yet remains durable and doesn’t feel too squishy. Cushioning technologies all start with DNA because they react to your unique stride. Smooth Transitions No matter how your foot strikes the ground, smooth transitions ensure comfort. If Brooks got it right, you shouldn’t even notice transitions.