KM3
Three reinforcing ribs at the arch of the foot enhance torsional resistance, strengthen the toughness of the carbon plate, and provide better support and stronger thrust required for movement
- 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-KNIT High Strength Yarn Flyknit Upper
Crafted with advanced HI-KNIT HI-strength yarn and integrated Flywire technology, it boasts outstanding toughness. Its streamlined, form-fitting, lightweight and breathable design enables 360° air circulation to cool feet and keep them dry and comfortable.
HiCarbon Full Palm Spade Shaped Stiffener Carbon Plate
HiCarbon fiber materials are layered and oriented multidirectionally based on the motion needs of the forefoot and heel. Three reinforcing ribs at the arch boost torsional resistance while enhancing carbon plate toughness, delivering superior support and stronger propulsion for movement, accelerating energy return to propel you forward with every stride.
Hifoam∞ Dual-Layer "Dynamic Motion" Midsole
Crafted with the innovative HIRACER midsole foaming technology, it forms uniformly distributed, specially structured air cells to reduce midsole weight while delivering enhanced shock absorption. It boosts energy return rate, shortens rebound time, and creates optimal endurance conditions for kilometer runs.
KPU Abrasion-Resistant & Non-Slip Outsole
Full-length KPU non-slip granules deliver enhanced wet-surface traction, superior abrasion resistance and powerful grip, conquering slippery challenges with ease.