adidas Astro Knit Pant (M) (Black)

The kind of running essential you'll reach for on rest days, too. These adidas pants offer all the elements that come in handy across the miles, from a sweat-proof pocket to 360 reflectivity. They have enough stretch for post-run yoga and side pockets for your keys. Plus the design is so classic, you won't feel out of place wearing them to get a drink with your evening run group.