Taisto Maki was the first man to set a World Record by cracking the 30 minute barrier in the 10,000 meter run. Though difficult to see, if you look closely you’ll notice the shoes he is wearing are typical of spikes from the first half of the twentieth century - and even earlier, back to the mid 19th century. In that era, the shoes were made from chromed leather and featured 4 to 6 permanent spikes, which could be up to 3/4" (nearly 20 millimeters!).
The best-selling technical running shoe enters the back half of its second decade with a plan: Be consistent. The design stays as near as possible to previous versions, only tinkering with improvements to materials, especially those at the top of ASICS’ impressive line. The similarity with the 2140 extends from the upper, with minor adjustments in the overlays, lowered ankle collar for better fit, to the midsole, through to the shank and outersole.
The Glycerin is the flagship of the Brooks neutral shoe line. Fall 2011 marks the second round of DNA cushioning for the Glycerin, and it has lost significant weight in this update process. The upper sports thinner overlays throughout the forefoot, softening the feel without losing support.