While some sneakers imbue their owners with magical powers, others simply provide increased flexibility, added comfort, and mini rocket boosters that ignite at the sight of diamond thieves. Break in a new pair of kicks with today's Groupon: for $20, you get $40 toward designer shoes and boots at Covert Shoe Lab, located in the Limelight Marketplace on the Avenue of the Americas. Hurry to redeem this Groupon, as it expires in just one month.

Covert Shoe Lab adorns sidewalk-stompers with an eclectic array of contemporary, athletic, and retro shoes from the world's top brand names, including designs from Lacoste, Pony, Puma, and SeaVees. Slip-ons from Havaianas ($38) and canvas kicks from Bed Stu ($45) fetch casual carousers' toes, and Croc-style Native slip-ons provide a beach-walking option for stylish sea captains and dainty swamp monsters. Lady trotters can slip on cozy Keds Champion Jutes in teal or orange ($45), or pamper ankles with a linen stripe slip-on ($50). Covert Shoe Lab's elegant array of boots include brands from Timberland, Abington, and Tretorn, and this summer, they'll carry exclusive, limited-time-only designs from New Balance and Fred Perry and Stussy Deluxe. Covert's shoe sultans will eagerly assist customers in the search for a new sneaker or frictionless boot to replace their foot-encasing kleenex box.