... and all kinds of knitted garments. 100% superfine merino wool mens knitted thermal underwear long johnsMicron: 17.5~20.5Weight: ... , interlock, terry, mesh, jacquard, double layer, fleece etcComposition: merino wool, silk, cashmere, modal, tencel, cotton, polyester, acrylic, nylon, alpaca ... 100 CERTIFICATION, WRAP CERTIFICATION ETC. 100% superfine merino wool mens knitted thermal underwear long johns