Towallmark Outdoor Jungle Fishing 360 Degree UV Protection Sun block Hat Folding Visor Nylon Cap Mesh Bucket Flap Hats by Towallmark Size:Cap inner circle 60cm(Unit:cm, 1inch=2.54cm) can be adjustable Fabric: 100% Polyester quick-drying fabric The crowd: neutral Features: waterproof, windproof, UV, breathable, quick-drying, ultra-light Adaptation projects: fishing, beach, bike cross-country, hiking, travel