Brooks just unveiled the new Glycerin Flex running shoe, and early wearers of the sneaker are already impressed. The new Glycerin Flex running shoe is now available for preorder and will officially drop on Jan. 30 in both a men’s and women’s style for $175. Brooks Glycerin Flex Running Shoe $170 NEW! Brooks fans who were lucky enough to try out the Glycerin Flex running shoe first rave about it. Shop more Brooks sneakersYou can also check out even more Brooks running shoes, including these popular styles: