KM3 PRO
Three reinforcing bars at the arch improve torsion resistance and strengthen the toughness of the carbon plate, providing better support and stronger driving force for movement, accelerating energy rebound and helping the carbon speed forward: the outer side of the arch is turned over the special carbon plate, enhancing stability and smooth bending
- 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 Fiber Upper
Adopts HIRACER HI-FIBER upper, with a density lower than human hair strands. Special weaving creates breathable micro-holes for enhanced breathability, toughness and durability. Built-in supportive reinforced structure ensures seamless fit; paired with an integrated flywire tongue, it delivers a technologically advanced, ultra-breathable upper.
HiFoam Max+HiFoam∞ Upper Layer Midsole of The Foaming Board
Upper Midsole: Constructed with an all-new HI-performance sheet molding process for premium underfoot feel. It reduces midsole weight while delivering exceptional cushioning and rebound, boosting energy return efficiency for ultra-responsive bounce.Lower Midsole: Adopts the "Dynamic Motion" tech foam process to cut midsole weight and enhance shock absorption. It elevates energy return rate for powerful, HI-impact rebound.
HiCarbon Full Palm Irregular Shaped Reinforced Carbon Plate
HiCarbon fiber materials are layered and oriented in multiple directions based on athletic demands. Three reinforced ribs at the arch enhance torsional resistance while boosting carbon plate toughness, delivering superior support and powerful propulsion for sports, accelerating energy rebound to drive forward with carbon speed. The asymmetrical carbon plate wraps upward on the lateral arch, enhancing stability for smooth cornering.
KPU Abrasion-Resistant & Non-Slip Outsole
Full-length KPU non-slip studs deliver superior wet traction and exceptional abrasion resistance, boasting powerful grip to conquer slippery challenges with confidence.