Navy Curve Hat $28.00 sold out CLASSIC PREMIUM SNAPBACK one size CAP with adjustable crown height is 80% acrylic, 20% wool. Hat size: 6.625 - 7.375. Clothing › Navy Curve Hat Sold Out Added! CLASSIC PREMIUM SNAPBACK one size CAP with adjustable crown height is 80% acrylic, 20% wool. Hat size: 6.625 - 7.375.