This reversable bucket hat features the artistry from The Hungry Caterpillar on one side and a denim chambray print on the reverse side.  The size is meant to fit children up to a 19" head circumference (use measuring tape and hold it from above one eyebrow, to the side over the ear, behind the head, over the other ear and around the second eyebrow).  The hats will be sold with an elastic band and a silicone locking cap to snug it under chins on a windy day if preferred.  I tried it on a 10 month old and an 18 month old and they both fit with room to grow.