Hemlock Hat Co. Blend Straw Lifeguard Hat Lifeguard hat in excellent condition. It's a lightweight hat with drawstring and SPF 50+ sun protection. Check out the website for lots of pictures. 100% Straw Size & Measurements: Dimensions: Brim Length: Wide (4.5 in / 11.4 cm) Crown Depth: High (4.5 in / 11.4 cm) Measurement Notes: One Size (55 cm - 59 cm) The “One Size” option typically fits most adults. The hat comes with an elastic headband as well to support best fit.