Like a thick woven lined with a t-shirt, this camping shirt is great for those days when it might be nice but it might also get cold later (read: camping). Shell fabric is 100% cotton with nubby yarn for a thicker, textured feel. Lining is our signature fabric that is a blend of two yarns (50% Supima Cotton and 50% Micromodal). Modal comes from recycled beech wood, which is a natural and sustainable source of raw material. So, eco-friendly and naturally absurdly soft. Heyo!