For NS HEMP, Men's T-shirts mean starting from fibers which are sustainably grown. So we chose a great fiber combination - hemp and organic cotton ： ☆ Hemp - as we all know, hemp is the oldest natural fiber, naturally air-conditioner ☆ Organic cotton - it's very soften and comfortable for wearing. Our hemp and organic cotton comes from CHINA, we chose the best material at every stage： Hemp Growing - Spinning Yarn - Knitting Greige - Fabric Dyeing - Fabric Washing - Cutting and Sewing. NS HEMP short sleeves are made with love in small and family-owned production environment where people are treated well. We worked hard to make what we think is a great short sleeves - we hope you will like it.