OPM Underwear

Finding the right fit is key to comfort, especially with designer underwear. OPM Underwear uses standard UK sizing and is true to size for most customers. We recommend checking our detailed size guide on the product page, which includes waist measurements in both inches and centimeters. If you're between sizes or prefer a more relaxed fit, consider sizing up. Our customer care team is always here to help with sizing questions, so feel free to reach out if you're unsure!

OPM Underwear is crafted from a premium blend of soft cotton and elastane, ensuring a smooth, breathable feel against your skin with just the right amount of stretch. Every pair is designed for superior comfort, inspired by our London luxury streetwear roots, so you can move confidently and comfortably all day. The branded waistband also adds a bold touch without sacrificing comfort or fit.

Absolutely. We want you to love your premium OPM Underwear. If you need to return or exchange, simply keep the underwear unworn, unwashed, and in its original packaging with all tags attached, and contact us within 14 days of delivery. For hygiene reasons, we can only accept returns of unopened underwear. Our easy returns policy is designed to give you total peace of mind when shopping luxury men's underwear from OPM Clothing.

Yes, OPM Underwear is 100% authentic and designed right here in London by OPM Clothing Ltd. Our collections are inspired by the energy of the city, blending bold branding with luxury streetwear style. When you buy from our official website, you can trust you're getting genuine, original pieces directly from the designer.

To keep your luxury OPM Underwear looking and feeling their best, we recommend washing them on a gentle machine cycle with similar colours at 30°C. Avoid bleach and tumble drying to preserve the premium fabric and signature branding. Lay flat or hang dry for optimal longevity. With the right care, your OPM designer underwear will stay in top condition, wash after wash.