It took a while, but Reebok's first plant-based shoes are ready for your feet -- the company is now selling limited numbers of the NPC UK Cotton + Corn through its website for $95 a pair in unisex sizes. You'll have to be happy with a lone "natural/chalk" color combo, but you can feel better knowing that 75 percent of the shoe is made from USDA-certified biological material. The upper is made entirely of the shoe's namesake cotton, while the sole is made from a corn-derived biobased TPU (DuPont's Susterra Propanediol). Even the insole is made from castor bean oil, and Reebok avoids using dyes to maintain the shoe's eco-friendly credentials.