MEN'S R1 M Nimbus 26 making it a better fit

making it a better fit for a wider range of foot shapes

and slam those reps in

5" Split Shorts are the ultimate addition to your workout wardrobe

They're serving fabulous

Here's a detailed comparison between the two models:

MEN'S R1 M Nimbus 26 making it a better fitThe R1 features a CPU outsole with an exceptional light weight of 8. 5 oz (US M9), but may produce noticeable noise on rainy days or on wooden floors. TUNEDFIT Dual Lacing System for separate lace adjustment Dual zone ZeroSag midsole inserts with little degradation during long runs LightCELL midsole base featuring excellent lightness and bounce GOFLOW midsole geometry to guide your stride Double layered jacquard upper with 40% recycled polyester