These Lightweight Ultraboost Running Shoes For Women Respond To Your Every Step. They Have An Adidas Primeknit+ Upper For A Supportive, Comfortable Fit And A Light Boost Midsole That Provides Energy Return. The Grippy Rubber Outsole Keeps You Stable On Your Feet As You Add Up The Miles. This Shoe's Upper Is Made With A High-Performance Yarn Which Contains At Least 50% Parley Ocean Plastic — Reimagined Plastic Waste, Intercepted On Remote Islands, Beaches, Coastal Communities And Shorelines, Preventing It From Polluting Our Ocean. The Other 50% Of The Yarn Is Recycled Polyester.