Jiffy Steamer Hat Nozzle. These Jiffy® Steamers are used worldwide in retail outlets, supply houses and hat stores to block, stretch, crease, shrink or shape straw and felt hats. Ideal applications include removing nesting rings in seconds and freshening felt to a velvet texture. Safe for most materials and fabrics. The J-1 is our standard hat steamer for home or light commercial usage. Equipped with a plastic 1-gallon bottle with no spill check valve cap and brass hat nozzle.