818S
Weight US(M)7.5 : 5.68 oz (161 g)
One-piece lightweight and breathable MONO yarn upper,M-TPU plate foamed insole,HIFOAM∞ "Dynamic Run" magic midsole,Full-length H-PEBAX crystal-clear nylon elastic outsole
- Find your size in the chart below.
- Scroll horizontally to see more sizes.
| US - Men's | 2.5 | 3.5 | 4.5 | 5.5 | 6 | 6.5 | 7.5 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| US - Women'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.
One-Piece Lightweight & Breathable MONO Yarn Upper
One-piece MONO yarn with 360° wrapping support ensures the upper fits the foot perfectly.The innovative one-piece construction of upper and tongue eliminates discomfort from stitching.Featuring the Wind-flow system, the upper provides 360° circular ventilation and cooling to keep feet dry at all times.
HIFOAM∞ Dynamic Magic Midsole
The midsole adopts the new HEALTH technology foaming process, forming uniform special energy elastic factors. It features higher energy feedback efficiency and shorter rebound time. The midsole is approximately 2 mm lower than CP2, with a widened heel design for enhanced stability, suitable for various track and field training and competitions.
Full-length H-PEBAX Crystal-Clear Nylon Elastic Outsole
Crafted from crystal-clear nylon elastomer via precision injection molding, the material features a uniform special structure with exceptional toughness. It boosts energy feedback efficiency and shortens rebound time, delivering sustained energy return for your feet. Scientifically distributed 6-pin configuration, paired with layered corrugated crystal columns, enhances grip and stability.
M-TPU Sheet Foamed Insole
The insole is made of highly elastic M-TPU sheet foam, providing consistent soft bounce and shape retention under repeated stepping, while delivering exceptional cushioning to protect joints during exercise.