Features: PremiumIron ribs structure,solid and sturdy. Works great in both sunny and rainy days.Blocks heat and UV rays with silver coating,prevents the UV effectively. 37.4" diameter of the umbrella,wide enough to keep your head and arms from rain. Double layer design provides better ventilation,and the top layer can be turned up. Fits for most grown-ups' head (Head circumference: 35-50cm/13.8-19.6in). Adjustable chin strap with lock to hold it tightly in place under your chin. Pull the rope on the top to open,and press the button to retract automatically. Easy to fold into travel-size,conveninet to carry and store. Suitable for fishing,camping,hiking,mounteering,etc. Specification: Color: Blue / Silver / Brown (optional) Unfolded diameter: 95 cm / 37.4 in Top diameter: 42 cm / 16.5 in Folding length: 33 cm / 13.0 in Head circumference: 35 - 50 cm / 13.8 - 19.6 in Weight: Approx. 324 g / 0.7 lb Package List: 1* Double Layer Umbrella Hat NOTE: The interior color of the umbrella will sent by random,but do not impact the quantity and the quality.