Handmad This Dinosaur Photo Prop comes in 3 sizes 0-3 months and 3-6 months, 6-9 months. SIZING Hat Circumference Hat Heigh 0-3 months- 12-13" 5 3-6 months- 14-15" 5 1/2 6-9 months- 16-17" 6 ***An important reminder...yarn braids can potentially pose hazards to infants and young children. Please never leave a small child unattended while wearing any hair/head accessories. All crochet made in a smoke free environment. Your Crochet Baby Hat is made with 100% acrylic baby yarn. The yarn is washer safe on cool/delicate cycle. I recommend drying flat to preserve shape and yarn.