Frequently Asked Questions
Everything you need to know about our performance running gear.
What makes Runderwear™ products different from standard athletic underwear?
Our products are specifically engineered for runners, featuring 360-degree seamless technology and moisture-wicking fabrics to eliminate chafing and provide ultimate comfort over any distance.
How do I choose the right size for my running gear?
We recommend referring to our detailed Size Guide located on each product page. Our gear is designed for a snug, ergonomic fit; if you are between sizes, we generally suggest sizing up for the best experience.
How long does shipping take for my order?
Standard shipping typically takes 3-5 business days within the continental US. Express shipping options are available at checkout if you need your gear for an upcoming race.
What is your return and exchange policy?
We offer a 30-day satisfaction guarantee. If you are not completely happy with your purchase, you can return or exchange unworn items in their original packaging.
How should I wash and care for my performance apparel?
To maintain the integrity of the technical fibers, we recommend machine washing at 30°C (86°F) and air drying. Avoid using fabric softeners or tumble drying, as high heat can damage the elastic properties.
Do you offer international shipping?
Yes, we ship to most countries worldwide. International delivery times vary by location and typically range from 7 to 14 business days.