SealSkinz Waffle-Knit Waterproof Bobble Hat A stylish, totally waterproof, windproof and breathable knit bobble hat. The acrylic waffle-knit outer provides maximum water repellency, the membrane delivers the waterproof and windproof propertiesand the micro-fleece liner gives warmth and moisture control. This close-fitting, comfortable hat is well-suited for everything from sailing or paddle boarding to working on the boat or socializing. Imported.