Get them ready for the warm weather with this lovely trilby hat from John Lewis. Crafted from woven straw, this classic hat features an open weave and a ribbon trimming with corsage embellishment. Size conversions: Small= ages 2-4 years, head circumference of 51cm. Medium= ages 5-8 years, head circumference of 53cm. Large= ages 9-12 years, head circumference of 55cm.