runderwear

runderwear

Award-winning anti-chafe running underwear with seamless technology designed specifically for runners.

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Current Offers

Best Deal

NEW Women’s Pulse Sports Bra - Fiesta

Your new go-to for effortless comfort and confident performance. Designed for low to mid-impact support, this seamless sports bra moves with you, offering a smooth, irritation-free fit that feels great from warm-up to cool-down.

Valid until 31/03/2026

Gifts for Her

Spoil the runner in your life with gifts that combine comfort, performance, and style. From supportive sports bras to anti-blister socks and seamless underwear, these thoughtful picks are designed to keep her moving confidently.

Valid until 28/02/2026

NEW - Women's Running Base Layer Top

Super-soft and seamless, our Women's Long Sleeve Seamless Running Base Layer is designed with comfort and performance in mind. Run warm in the coldest of climates without overheating thanks to dynamic heat control and a flexible fit so you can wear it on it's own or as a base layer. 100% comfort, 100% chafe-free - guaranteed.

Valid until 28/02/2026

Bestseller Women's Running Briefs

Coverage, comfort, confidence. Our Women's Anti-Chafing Running Briefs are designed to support thanks to super-soft, seamless fabric that wicks sweat away from your skin quickly. You'll be cool, dry and 100% chafe-free, guaranteed.

Valid until 28/02/2026

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About runderwear

Runderwear is the UK's specialist performance underwear brand created exclusively for runners. Founded in 2013 out of frustration that no one had made underwear designed specifically for the running community, Runderwear has revolutionised how runners think about their base layers. The brand's mission is simple: eliminate the discomfort caused by ill-fitting underwear during running. Using innovative 360-degree seamless technology, Runderwear creates garments from a single piece of fabric, eliminating side seams and labels that cause irritation and chafing. Every product is designed with anti-chafing, breathable, and moisture-wicking fabrics. Runderwear's award-winning range includes men's and women's running underwear, sports bras, running socks, and technical base layers. The men's collection features briefs and boxers, while the women's range includes briefs, thongs, hipsters, and high-performance sports bras. All products are designed to stay in place during even the most intense runs. So confident are they in their products that Runderwear offers a 90-day chafe-free guarantee. If their products cause you to chafe during running, they'll happily refund you. This commitment to performance has made Runderwear the go-to choice for recreational joggers and elite marathon runners alike.

Discounts & Loyalty

Gift Cards Available

Shipping & Returns

Free delivery over £40.00International Shipping

Free UK delivery on orders over £40. Standard delivery 2-4 working days. Express delivery available.

Returns Policy

90-day chafe-free guarantee. Full refund if products cause chafing. Standard 30-day returns on unworn items.

Company Information

Founded

2013

Headquarters

United Kingdom

Payment Methods
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Sustainability

Runderwear creates durable, high-quality products designed to last through hundreds of washes, reducing the need for frequent replacement.

Frequently Asked Questions

What is Runderwear's chafe-free guarantee?

Runderwear offers a 90-day chafe-free guarantee. If their products cause you to chafe during running, they will provide a full refund.

How is Runderwear different from regular underwear?

Runderwear uses 360-degree seamless technology, creating garments from a single piece of fabric with no side seams or labels. The moisture-wicking, anti-chafe materials are specifically designed for running.

How do I wash Runderwear?

Runderwear can be machine washed and will hold its shape through hundreds of washes. Follow the care label instructions for best results.

Does Runderwear make sports bras?

Yes, Runderwear offers a range of high-performance sports bras designed with the same seamless technology and anti-chafe properties as their underwear.

Runderwear has established itself as the leading specialist in performance running underwear, solving the age-old problem of chafing that plagues runners of all levels. The brand's innovative approach puts runner comfort first. ## The Runderwear Difference What sets Runderwear apart is their 360-degree seamless construction. By creating garments from a single piece of fabric, they've eliminated the seams and labels that cause friction and irritation during repetitive running motion. Combined with moisture-wicking, breathable fabrics, this technology delivers genuinely chafe-free running. ## Trusted by Runners From park run enthusiasts to ultra-marathon competitors, Runderwear has become the trusted choice for serious runners. The 90-day chafe-free guarantee demonstrates their confidence in the product - and their commitment to customer satisfaction.