What’s Really in Your Underwear? Why OEKO-TEX® Testing Matters

When you wear something all day, what’s in the fabric matters just as much as how it looks or feels. Consumers are paying more attention to the materials, dyes, finishes, and substances used in everyday clothing especially garments worn directly against the skin.

That’s one reason we pay attention to OEKO-TEX® STANDARD 100 certification when choosing products for The Look by WPK. The STANDARD 100 label is used for textiles that have been laboratory tested against a list of more than 1,000 harmful substances.

But fabric testing is only part of the story. Comfort also comes down to how underwear is actually constructed—from the waistband and pouch to the seams and overall fit.

Why OEKO-TEX Underwear Testing Matters

For shoppers comparing OEKO-TEX underwear, independent textile testing can provide useful information about how the fabric has been evaluated.

Clothing can involve a wide range of dyes, finishes, treatments, and manufacturing chemicals. Research has identified substances of concern in textiles including certain dyes, plasticizers, PFAS, and metals, while the EPA also notes that formaldehyde can be used in textiles and apparel. That doesn’t mean every garment contains dangerous levels of these substances but it does explain why independent textile testing matters.

For clothing worn directly against the skin for hours at a time, knowing that the finished textile has been tested to an established standard can provide an added level of confidence.

What Does OEKO-TEX® STANDARD 100 Mean?

OEKO-TEX® STANDARD 100 is an internationally recognized certification for textiles tested for harmful substances. According to OEKO-TEX®, every component of a certified article from the fabric and thread to buttons and other accessories is tested against a list of more than 1,000 substances. The testing requirements also become stricter as the amount of direct skin contact increases.

Comfort Is More Than Just the Fabric

Fabric matters, but thoughtful construction can make just as much difference in everyday comfort. The Look by WPK trunk boxer briefs feature a soft fabric-wrapped waistband with no exposed elastic, a double-layer pouch for gentle support, and a seam-free back designed to reduce irritation and chafing. Each pair is also made to order—printed, cut, and sewn after purchase combining comfort-focused construction with bold, original designs.

Designed With Everyday Comfort in Mind

Underwear is one of the first things you put on and one of the last things you take off, so the details matter. For us, that means looking beyond the design on the outside and paying attention to the fabric, construction, support, and comfort that go into every pair.

The fabric used for The Look by WPK trunk boxer briefs is OEKO-TEX® STANDARD 100 certified, while features such as the fabric-covered waistband, lined front pouch, no-back-seam construction, and tear-away care label are designed with everyday wear in mind.

If you’re ready to upgrade your underwear drawer with bold designs and comfort-focused construction, explore The Look by WPK men’s trunk boxer briefs.

Shop Men’s Underwear →