Nike Air Pegasus + 27 GTX - It's not always sunny and warm when you want to run, so the Nike Air Pegasus+ 27 GTX trail running shoe provides a weatherproof option for those cold, wet days. Breathable mesh upper with synthetic overlays adds comfort and support. GORE-TEX XCR® membrane offers waterproof warmth and protection. Soft, cushy foam midsole delivers a great blend of responsive cushioning and durability. Nike Zoom™ unit in the heel brings low-profile cushioning and lightweight performance. Blown rubber outsole lugs give better cushioning and response. Flex grooves for enhanced flexibility and a smooth, efficient stride. Nike+ ready. Wt. 11.8 oz.