Featuring a breathable Primegreen engineered mesh upper, the adidas Women's SolarBoost 3 Running Shoes are made from recycled polyester as the brand work to reduce their carbon footprint and pave the way for a more sustainable future. The upper is also lightweight and allows air to circulate and keep your feet cool on long runs while securely wrapping the foot and delivering a secure fit thanks to the traditional lacing system and heel counter. At the midsole, a combination of boost midsole and an Energy Rail gives a soft well-cushioned running experience that returns a lot of energy and gives a smooth transition through the gait cycle. Finished with a Stretchweb outsole with Continental™ Rubber that naturally flexes with your foot and provides durable grip.