The Brooks Adrenaline GTS 23 Women's Running Shoe has been a runner's favourite for over twenty years. It's designed to offer the perfect balance in cushioning and support, with GuideRails that support and keep you moving in comfort while correcting any excess movement in your gait, to help you stay in your natural stride. The updated midsole has 100 DNA LOFT v2 cushioning, from the heel to the forefoot, that works with the Segmented Crash Pad for a smoother transition. The upper has a modern, sleek, streamlined upper with engineered Air Mesh that's breathable and offers the support and fit that long-time users of the GTS have come to expect. Features GuideRails Support System Soft cushioning with just-right flexibility New midsole features soft and lighter weight DNA LOFT v2 cushioning. Engineered air mesh upper provides comfort and breathability with 3D Fit Print for added structure Full-length Segmented Crash Pad allows smooth transitions Standard B width 59.87 Recycled materials in the upper 11.02 Plastic bottles diverted from landfill SIZING ADVICE It's normal for your feet to swell slightly when running, especially over longer distances. We recommend ensuring your running shoes have enough room to account for this and to allow your toes to spread comfortably, by leaving approximately a thumbs width of space between the end of your longest toe and the front tip of the shoe. This will help to reduce the risk of bruised toenails, blisters or numbness. Running shoe sizes can vary slightly from brand to brand but we generally advise wearing at least half a size bigger than your regular shoe size.