The hydrophobic crown panels, as well as the perforated side and rear panels let your noggin breath and but also keep the cap from getting soaking wet. Inside the cap is a moisture-wicking lining and the sweatband is also antibacterial, so your forehead won't be so inclined to break out. premium, water-friendly hat designed in collaboration with Formula 1 driver Daniel Ricciardo. It is part of the melin Hydro Collection, specifically designed to be water-resistant, durable, and buoyant, making it ideal for active, water-based, or high-sweat environment! Excellent condition!!!