Melin Hydro Odyssey Mac Cap in Grey. - size M/L (also in S, XL) Melin Hydro Odyssey Mac Cap in Grey. - size M/L (also in S, XL) Mesh hat with embroidered graphic patch at front. Imported. Adjustable back strap. Shallow fit. High breathability. Measures approx 22-24 in circumference. MLIN-MA119. 70408-Moon. Melin believes that hats aren't just a casual accessory, but an essential wardrobe staple that expresses your personal style. The California-based label is inspired by the art of millinery: the craft of bespoke hat making which dates to the 16th century in Milan, Italy. By investing countless hours and careful thought into each design, Melin creates comfortable and long lasting headwear that will accompany you on all your adventures.