Brand new and still in package. This cap is a kids size, which also fits adults with smaller heads. From the website: 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.