The Saucony Kinvara 2 no longer stands alone. Prepared to duel, is the Brooks PureFlow. It is built with a 4mm heel-toe offset, just like the Kinvara 2, but sits an estimated 2mm higher off the ground (stack height: heel-23mm, forefoot-19mm). The extra 2mm mostly comes from the outsole, which should increase durability over the Kinvara 2. But that extra thickness, no matter how slight, does come with a weight increase. The PureFlow comes in an estimated 1.3 ounces heavier than the Kinvara 2 but is still quite light (men’s sample size 9.0=8.6 oz, women’s sample size 8.0=7.6 oz).
Comparisons with the Kinvara 2 do not end with the specifications. The PureFlow is similarly quite soft while standing or walking but more responsive while running. Whereas some customer feedback indicates the Kinvara 2 may be too soft at a quick pace, initial reports suggest the PureFlow to be more responsive at faster paces. This unique dynamic is the result of Brooks blending their DNA cushioning with their premium BioMoGo midsole foam.
As part of the Brooks PureProject line, the PureFlow comes with a set of standard features geared toward midfoot striking and a less-is-more philosophy. This shoe is for those who want a more “natural” experience but with cushioning not found in the near-barefoot type shoes (Altra Adam/Eve, Inov-8 Bare-X 200, Merrell Trail/Pace Glove, New Balance Minimus Trail, Saucony Hattori).
The PureFlow has an MRSP of $90 with a limited release in October 2011. A broader release with additional colors begins January 2012.