Pre-Order: Adult Briefs

The next round of adult sizes is almost here! Pre-Order now and these should be shipping your way by June 1st.

Our briefs are thoughtfully designed with a 2-inch thick waistband and 1.5-inch thick leg bands, offering a secure yet gentle fit. They typically sit just below the navel and are true to size, but we always recommend checking out our size guide below to see fit photos and find the perfect match for you.

*The images featured are of our child sizes. The designs will appear a bit smaller on the adult sizes.

Some people see bamboo fabric and worry that it will be hard to care for. It's not! Many customers have praised the durability of WunderUndies. Here's what you need to know:

Machine wash cold with mild detergent. No fabric softener. Dry on low. If you feel the need to iron your undies, do that on low too. These are the practices for the longest lasting undies.

Our fabric blend of 67% bamboo, 28% cotton, and 5% spandex is crafted to provide unmatched comfort, durability, and versatility. Bamboo offers exceptional softness, breathability, and moisture-wicking properties, making it perfect for sensitive skin and active kids. Cotton adds strength and structure, ensuring long-lasting wear, while the addition of spandex delivers just the right amount of stretch for a snug, flexible fit. This thoughtful combination creates underwear that feels gentle, moves effortlessly, and stands up to everyday play, all while supporting sensory-friendly comfort.