Blush Stripe Hat - Bamboo and Organic Cotton. With a versatile roll-up design that fits up to six months, baby MORI bamboo and organic cotton hats are a favourite among MORI mothers.Flexible roll-up length. With the silken touch of bamboo-organic cotton mix fine fabric, your baby's sensitive skin deserves no less. Simple and luxurious baby basics in classic tones, created with the uncomplicated aesthetic of tasteful Scandinavian and Japanese designs in mind.