Dive in with confidence! Introducing the world's first satin-lined and adjustable swim cap designed to keep your hair dry and style protected, even underwater!  Say goodbye to uncomfortable and ill-fitting swim caps. With its patented design featuring an adjustable band and performance clasp, and lightweight performance fabric, this swim cap will give you the freedom to enjoy swimming again! 🌊 Why Choose Hairbrella? 100% Waterproof & Leakproof: Fully waterproof construction, ensuring complete protection against water ingress Thin & Lightweight Silicone Skin: Our proprietary fabric provides enhanced hydrodynamics while minimizing drag for optimal performance  Satin-Lining: To optimize comfort and reduce friction, for the ultimate experience in hair protection Adjustable Band and Performance Clasp: For a one-of-a-kind customizable fit and secure positioning Waterproof Band Seal: Advanced sealing technology to prevent water penetration Embrace the future of swim caps and order now to experience the ultimate combination of innovation, performance, and style. SIZING: Classic size fits most adults ages 8+ Kids fits most kids 2-4 years old XL size for larger heads, long/thick hair and protective hairstyles 18 inches  Bands are adjustable and fit most in this range 43-56 cm (Classic), 51-61cm (XL), 38.49 cm (Kids) Men with larger heads prefer the XL Care Instructions: Hand Wash & Hang DryFast Shipping: Ships same or next business day from Atlanta, GA. International orders ship within 2 business days via UPS. 30-Day Hassle-Free ReturnsPatent Pending