HIRACER 1.0
Equipped with multiple layers of hard spade-shaped carbon fiber plates, it injects strong power into your steps. With every step of pushing off the ground, you can feel the surging thrust, helping you easily increase speed and achieve breakthroughs on the track.
- 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.
Weight
US(M)7.5 : 7.94 oz (225 g)
Heel Stack
39 mm
Forefoot Stack
31 mm
Heel-Toe Offset
8 mm
WIND FLOW MONO Breathable Yarn
One-piece MONO mesh upper adapts to your feet for a customized, snug-yet-comfortable fit. Equipped with the WIND-FLOW system, it features precisely aligned breathable mesh holes for 360° all-around ventilation.
HiCarbon Shovel Shaped Outsole with Hard Carbon Board
Carbon fiber materials are layered and oriented in multiple directions based on the motion needs of the forefoot and heel, delivering the support and propulsion required for HI-performance sports. It accelerates energy rebound to power your speed forward.
HiFoam∞ H-Pebax Supercritical Foaming Midsole
Nylon elastomer material undergoes a supercritical physical foaming process to form a uniform structure of special air cells, delivering higher energy return efficiency and faster rebound response for continuous foot support during every stride.
AGCS Wet Ground Anti Slip and Wear-Resistant Outsole
The All Ground Control System outsole is crafted from polyurethane, delivering superior wet traction and exceptional abrasion resistance.
Lightweight Propulsion, Built to Break Through
Multi-layer shovel-shaped carbon plates deliver powerful propulsion, while the HiFoam∞ H-Pebax midsole keeps every stride lighter, faster, and more responsive.
Breathable Fit, Comfort That Lasts
The WIND FLOW MONO one-piece breathable upper wraps the foot with a light, adaptive fit, delivering 360° ventilation from warm-up to everyday wear.
Stable Support, All-Ground Control
The AGCS anti-slip, wear-resistant outsole provides reliable traction, while the lightweight build keeps running, training, and daily movement smooth and secure.