1. ONE SIZE FITS MOST: Outdoor bucket hats fit most adults. Sun hats circumference: 21.6-22.8inches, height: 3.9 inch, brim Length: 3.5 inch. There is a drawstring on the back of hat, and you can adjust it to the most suitable size for yourself. They are designed for outdoor. Whether you're hiking , go fishing or playing on the beach, our summer hats will protect your head and face from the sun and heat. 2. RELIABLE UV PROTECTION - These sun hats are made from GOOD quality and waterproof polyester.Mesh layer inside can greatly improve cooling, comfortable and airflow. The wide brim is large enough to shade forehead. It will keep you from harmful UV rays, sunshine and wind in the Summer. 3. FOLDABLE & LIGHTWEIGHT - These beach fishing hats are packable, foldable and flexible, and they will not be out of shape. With a portable and lightweight design, you can easily fold this top up, and fit it into any purse, backpack, or carry bag. You can carry this hat everywhere you go. 4. FASHIONABLE & MULTIFUNCTIONAL - There are 3 colors- pure color and multicolor for you to pick up. It is not only a sun protection hat, but also a fashionable style. They are GOOD for outdoor, beach, gardening, fishing, holiday, travel, safari, camping, hiking, hunting, pool, climbing, mountaineering, boating, golf, etc. 5.IDEAL GIFT: Apart from being an essential sun blocking hat to protect your head, you could send this straw sun hats to your friends or families as gift since it's perfect for beach playing activites, travel, pooling, camping, hiking, etc.