Yoga yarn is 35% lighter in weight than the 100% cotton in an equivalent weight. So, knit and weave your fabrics, jackets, pull-overs, scarves, shawls and homewares which will have the bulk and density you want but at the same time staying light! Our Yoga yarn has a nylon filament core completely covered by a cotton outer wrap! Get the best of both worlds: the strength and elasticity of nylon and the natural comfort and beauty of cotton! It is a 2 ply (two threads plied together) yarn - each ply is cotton spun over the nylon filament - the nylon filament is not visible and it will dye like 100% cotton.