RW1031-S
| Size | Waist | |
| inches | cm | |
| S | 30 - 32 | 76.2 - 81.3 |
| M | 32 - 34 | 81.3 - 86.4 |
| L | 34 - 36 | 86.4 - 91.4 |
| XL | 36 - 38 | 91.4 - 96.5 |
| XXL | 38 - 40 | 96.5 - 102 |
| XS | S | M | L | XL | XXL | ||
| WAIST | inches | 25 | 27 | 29 | 31 | 33 | 35 |
| cm | 63.5 | 68.6 | 73.7 | 78.7 | 83.8 | 88.9 | |
| HIPS | inches | 35 | 37 | 39 | 41 | 43 | 45 |
| cm | 88.9 | 94 | 99.1 | 104 | 109 | 114 |
| S | M | L | XL | |
| UK Size | 8-10 | 10-12 | 12-14 | 16-18 |
| US Size | 4-6 | 6-8 | 8-10 | 12-14 |
| Bust (inches) | 35 | 37 | 39 | 41 |
| Bust (cm) | 90 | 95 | 100 | 105 |
| Waist (inches) | 27 | 29 | 31 | 33 |
| Waist (cm) | 70 | 75 | 80 | 85 |
| Hips (inches) | 37 | 39 | 41 | 43 |
| Hips (cm) | 95 | 100 | 105 | 110 |
Run with confidence in runderwear men's running briefs. Designed for a classic fit with modern performance, these anti-chafing briefs are lightweight, breathable, and crafted with seamless construction for ultimate comfort. The sweat-wicking fabric keeps you dry and supported, no matter the distance.
Perfect for runners seeking a snug, secure fit, these briefs are guaranteed to keep you 100% chafe-free—mile after mile.
.
Runderwear is the original performance underwear for running. Our mission is to eliminate the discomfort caused by ill-fitting underwear and clothing and create performance running underwear, base layers, running bras and socks that are supremely comfortable and chafe-free.
Chafe-Free
Our multi award-winning underwear range was created as a solution to the bane of many runners’ lives – chafing. Each different product is designed with the same core elements in mind, then tweaked to suit different style preferences and provide an anti-chafing solution for all.
Seamless Technology
The underwear is created on a 360° seamless machine from a single piece of fabric, which means no side seams or labels. This significantly reduces the risk of skin irritation and minimises wastage during the production process versus the traditional cut and sew method.
Moisture Wicking
The technical fabric has excellent moisture-wicking properties to remove sweat from your skin quickly. It has been extensively researched and tested to maximise performance, helping you stay dry and comfortable - even during the most intense exercise.
Breathable Fabric
The performance fabric is lightweight and breathable, with carefully positioned micro-perforations incorporated into the design of each underwear style. These maximise airflow and optimise core temperature control, helping you to stay cool in any conditions.
Ergonomically Designed
Specifically engineered for runners, by runners to deliver the ultimate experience in comfort. Durable fabric with 4-way stretch movement allows you to run freely and provides support to your body, making it the perfect first layer against your skin.
