Naked Fit underwear by Jack Adams, made from Tencel® fabric, feels like you have nothing on. While hugging the body in all the right places, our Naked Fit briefs and boxers wick away moisture, ensuring you stay comfortable and dry during your workout. The combination of fabric and structure means Naked Fit is designed for athletic pursuits or the businessman on the go.
Currently widely available in royal blue and seafoam, the styles are also available in black exclusively to The Underwear Experts’ monthly underwear club customers.

Tencel® brand fabric is a strong fiber which is made from wood, but feels amazingly light on the body. The botanic materials used to make the fabric are sustainably-sourced, keeping in line with Jack Adams’ philosophy and practices. Tencel® is absorbent, soft, and cool -- exactly what you want on your body when you are working up a sweat.

Founded in 2010, Jack Adams underwear and athleticwear are produced to the highest standards using sustainable materials and environmentally-sound practices. Sales and operations are based in Portland, Oregon, where products are designed, warehoused, and shipped to customers. Jack Adams products are crafted in Portugal of premium fabrics, in partnership with family-owned businesses.

https://www.jackadamsusa.com/jackadamsusa_naked-fit-collection/