The Kinvara has long been a workhorse in our stables. A year ago, the high-performing trainer won our Best Update award--mostly because of an upgrade to its midsole foam. This year, Saucony further improved the package. The outsole got a little extra rubber for increased durability--especially at toe-off and along the outer edge through the midfoot. The upper has a more secure fit thanks to a new saddle feature called "Pro-Lock," a triangular piece sandwiched between mesh in the midfoot that connects to the laces and pulls the upper snug against your foot. The upper fabrics also received an upgrade: A more durable mesh has been added in the forefoot, while a softer, more padded fabric now lines the collar.