With a winning blend of technical features, the Flex Sierra showcases an engineered knit upper for added breathability and a dual-density outsole, as well as 1st Ray technology for added range of motion under the first metatarsal. Rubber elements andd traction under foot.
Product Dimensions: 5 x 5 x 0.7 inchesShipping Weight: 12 ounces (View shipping rates and policies)ASIN: B018WHDGX0Date first listed on Amazon: April 30, 2013
