... Superfine Merino Wool 2)Jersey,Interlock,Rib,Terry,Brushed,Pointelle 3)145gsm ~400gsm 1)Materials:100% merino wool2)Micron:17.5~ ... resistant, flame-retardant, durable, anti-static, and a UV protector. Wool is 90% keratin - a tough, insoluble, fibrous protein also ... in producing merino wool products for many years with high quality,and Looking forward to your specific inquiries. 100% merino wool tops