Embroidered 72 logo on the heel and the gum rubber sole add to the retro look. Padded, low-cut collar looks sleek and feels great. his Nike Killshot 2 upgrade uses glossy synthetic leather and detachable fold-over tongue flaps to create a fresh take on an old-school look. And it wouldn't be a "tennis" shoe without the rubber sole's reliable traction. Inspired by the original low-profile tennis shoes, this Nike Killshot 2 upgrade uses glossy synthetic leather and detachable fold-over tongue flaps to create a fresh take on an old-school look. And it wouldn't be a "tennis" shoe without the rubber sole's reliable traction.