ZOOT designed the Women"s Ultra TT 6. 0 Running Shoe for the neutral runner looking for a shoe that can do it all. Blending flexibility and support, the TT 6. 0 is ideal for speed/interval training, and is light enough that it won"t hold you back on race day. With its BareFit design that performs best without socks and the speedy quick-lace system, you"ll zip through T2 almost as quickly as you"ll fly down the course powered by its lightweightbut cushionedcomfort.