6.1 oz / 173 g
- Fits true to size.
- Offers an extra wide toe box for increased volume.
- Airmesh upper for increased comfort and breathability.
- You may remove the insole to gain more volume by approx. ½ size.
- This model shares similar fit and ride characteristics with CORE. Shoe Finder Size conversion chart
- REALFIT™ last
- Reflective Airmesh upper
- Reflective overlays
- Reflective lacing
- Asymmetrical lacing
- Anti-slip microfiber heel pad
- No-tongue design
- IBR (Injected Blown Rubber) outsole
- Rubber toe bumper
- Zero-drop
- Stitch-down construction
- 11mm Forefoot/heel stack height
- 3mm removable Antimicrobial insole


GET SEEN! PHASE-X is the ultimate low light running shoe with 360-degree reflectivity. With a reflective breathable open-weave mesh upper, reflective laces and overlays, you're sure to be seen while enjoying cooler weather runs in safety and style. With an asymmetric lacing system, wide toe-box and our unibody IBR outsole, PHASE-X provides maximum performance with minimum weight and interference. Zero-drop, 11mm forefoot/heel stack height.

PHASE-X is built on our revolutionary IBR (Injection Blown Rubber) platform, offering better abrasion resistance, grip and compression-set than injected EVA while reducing weight than traditional rubber outsoles. This provides a runner with incredible ground feel and running comfort in an amazingly durable, flexible and lightweight complete package.



  • Pushing the boundaries of material technology, IBR (Injection Blown Rubber) offers better abrasion resistance, grip and compression-set than injected EVA, at a much lower density and weight than rubber. This provides runners with excellent groundfeel and outstanding durability, longevity and running comfort in a flexible, lightweight single unit.
  • GET SEEN! 360° Reflectivity provides amazing high visbility in low-light conditions thanks to fully reflective no-sew laminate overlays and a lightweight, breathable reflective mesh. Additional reflective details include reflective laces, logos and accents.