Though keeping sneakers in the car is a convenient way to be prepared for a spontaneous workout, beware of extreme weather: Both hot and cold weather can wear down the rubber in your shoes—especially heat, which can warp EVA (the material in the midsole). Eventually, says Sharon Barbano, a spokesperson for Saucony, “that will mean less shock absorption for your feet when you’re working out.”
For the same reason, be sure you’re letting your sneakers air-dry, rather than letting them sit on a radiator or in a hot dryer.
What’s the best complement to well-cared-for shoes? An organized closet—get advice and inspiration here.