Paradox Womans Merino Wool Blend Performance Base Layer Top Black 1/4 Zip M Repreve® recycled polyester Fabric made from 8 recycled bottles Natural merino wool Moisture-wicking Odor control Fast-drying Made in Cambodia Content: 84% Repreve® Recycled Polyester 11% Merino Wool 5% Spandex 175 GSM Lightweight LS-E. See my other listings for other sizes. I have M, L & XL in stock.