Take on cold, wet conditions in the Ultraboost Light COLD.RDY 2.0 Shoes. The Light BOOST midsole is the newest generation of BOOST, with even more energy return to keep you feeling strong through any distance and pace. The shoes ride on a Continental WinterGrip Rubber for superior traction. Made with a series of recycled materials, this upper features at least 50% recycled content. This product represents just one of the solutions to help End Plastic Waste.