This is Raindrops 100% cotton interlock white cap with a blue cuff. We manufacture this to match our body suits, pants and a lot of bibs! It is made in 100% cotton interlock, not jersey, which means it will keep your baby warm and comfortable, since it is heavier and softer than most others. The blue cuff can be rolled up or down, making it adjustable and there is a little hand tied knot at the top. This comes in a one size fits all, which we call Layette, and it usually fits most babies from birth to 3-4 months of age. It also comes in pink. Raindrops has been manufacturing top quality, unique baby garments in the USA, since 1936.