Reducing plastic use is laudable; finding clever, profitable ways to employ plastic waste is even more so. Adidas, the German athletic-gear maker, is a founding member of Parley for the Oceans, which brings together people and organizations to collaborate on protecting the seas. Its biggest inspiration: using plastic recovered from the ocean to make new iterations of its UltraBoost shoe. Adidas has now sold 1 million pairs of those shoes, priced at $160 to $200; each one reuses the equivalent of 11 plastic bottles. Other offerings made from ocean-retrieved plastics include soccer kits and hoodies. It adds up to a great example of doing well by doing good in retail—an environmentally friendly product line for a public that’s increasingly sensitized to the dangers of plastic waste.