Premium Material - Our swimming caps are made of high-quality nylon fabric, soft and comfortable to wear, lightweight, with excellent craftsmanship and durable stitching, resistant to fading and tearing, long-lasting and practical. Excellent Elasticity - These swim caps offer good elasticity, making them suitable for most women and girls, easy to put on and take off, with a flexible fit that is not too tight, providing a comfortable experience. Good Protection for Your Hair - These practical swim caps help reduce drag and keep your hair in place while swimming, offering protection from the sun during summer swims, suitable for both long and short hair. Comfort & Safe - The roomy design provides added comfort for longer-haired swimmers, ensuring a secure fit and tangle-free swimming experience. Wide Applications - Ideal for synchronized swimming, recreational swimming, water aerobics, bathing, and other water activities, enhancing convenience during swim sessions. Size: Head circumference: 20.5-21.3 inches / 52-54 cm; Hat height: 7.08 inches / 18 cm