Our umbrella hats are hands-free, lightweight and durable, you can wear it while working in the garden, at the beach, fishing, kayaking, to sporting events or anytime you want to get a good laugh that everyone will enjoy!The diameter  is 27'' when it is open, and these umbrella hats feature a strong elastic headband that easily adjusts to your head without being too tight, so everyone from all ages including adults, men, women, children and toddlers can enjoy. The umbrella hat is made of quality nylon fabric, waterproof and sun proof, it can serve as a completely windproof rain cover on rainy days.You can give them as a great novelty party favor, birthday or gag gifts!