easy spirit e360 Radiostar Sneaker Mule Spring forward in style wearing Easy Spirit's hit shoe, Radiostar. For all-encompassing comfort, you can't beat this sporty mule. Slip it on and feel the rhythm in every step — flexing, stretching, breathing — as you dance through your day. Fresh colors, fun patterns and a low back put a summery spin on the classic sneaker profile. So get into the groove and on the move in these cool and comfy kicks.