- Find your size in the chart below.
- Scroll horizontally to see more sizes.
| US - Women's | 2.5 | 3.5 | 4.5 | 5.5 | 6 | 6.5 | 7.5 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US - Men's | 4.5 | 5.5 | 6.5 | 7.5 | 8 | 8.5 | 9.5 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 |
| CM | 22 | 22.5 | 23 | 24 | 24.5 | 25 | 25.5 | 26 | 27 | 27.5 | 28 | 29 | 29.5 | 30 |
| UK | 2 | 2.5 | 3.5 | 4.5 | 5.5 | 6 | 7 | 7.5 | 8.5 | 9 | 10 | 11 | 12 | 13 |
Size Measuring Guide
A perfect fit for your ultra-marathon running shoes is important for comfort and performance. Follow these tips to measure your foot size at home:
General Tips:
- Measure your feet at the end of the day as they're at their largest due to swelling.
- In between sizes? One foot is bigger than the other? Take the larger size.
- It's best to measure every year. Your size could change over time.
What You'll Need:
- A piece of paper larger than your foot,
- A pen or pencil,
- A ruler or measuring tape,
- Socks of the thickness you'll wear with the shoes.
Steps:
- Stand on the paper in the socks you'll wear with the shoes.
- Use the pen or pencil to mark the end of your longest toe and the back of your heel. It's important to measure both feet as their size can vary.
- Match your measurements to our size chart to find the best fit. If you're between sizes, we suggest choosing the larger size for better comfort.
Weight
US(M)7.5 : 7.23 oz (205 g)
Heel Stack
29.7 mm
Forefoot Stack
25 mm
Heel-Toe Offset
4.7 mm
HI-FIBER High-Strength Compact Yarn Woven Upper
Featuring a fine heddle woven upper with a density lower than human hair strands, it forms breathable micro-holes via specialized weaving for enhanced ventilation, toughness and durability. A built-in support reinforcement structure ensures a seamless, snug fit. Paired with the AP-FIT dynamic lacing system, it accommodates different instep shapes, creating a technologically advanced and highly breathable shoe upper.
HiFoam Max+HiFoam∞ Upper Layer Midsole of The Foaming Board
Upper Midsole: Molded twice from eco-friendly ATPU supercritical sheet, it boasts higher density, better anti-fatigue performance, superior toughness and elasticity, enhanced energy return efficiency, and ultra-responsive bounce.Lower Midsole: Adopting the "Dynamic Motion" tech foaming process, it reduces midsole weight while delivering improved shock absorption. It boosts energy return rate and delivers powerful rebound.
HiCarbon Full Palm Irregular Shaped Reinforced Carbon Plate
Carbon fiber material is layered and oriented multidirectionally to match motion demands. Three reinforcing ribs at the arch enhance torsion resistance while boosting carbon plate toughness, delivering better support and stronger propulsion for movement, accelerating energy rebound to drive forward with carbon-powered speed. The irregular-shaped carbon plate wraps upward on the lateral arch, improving stability for smooth cornering.
KPU High-Wear-Resistant Non-Slip Outsole
Full-length KPU non-slip granules deliver enhanced wet-surface traction, superior abrasion resistance, and powerful grip to conquer slippery challenges.