adidas Supernova Glide 6 Men's Running Shoes Synthetic Rubber sole boost's energy-returning properties keep every step charged with an endless supply of light, fast energy Textile upper with seamless mesh in forefoot for maximum comfort and lightweight flexibility BOOST provides a higher energy return than any other foam cushioning material in the running industry. Feel anything but a revolution? Just return your BOOST shoes to us within 30 days and well happily refund you. See Return Policy for details.