Inspired by the construction of a bra (think stretch and support), the Under Armour Speedform Apollo running shoe ($100; ua.com) provides an industry-first seamless heel that's more comfortable than anything in your girlfriend's underwear drawer.
The sneaker is crafted out of two pieces—a flexible heel and a more structured forefoot—weighing in at just 6.5 ounces. Instead of lace and underwire, though, it's made of a lightweight composite material to achieve those varying degrees of pliability. Thankfully, the shoe's sizing remains standard.
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