High quality materials, as well as extensive research into different knitting textures and hat shapes, enables Spacecraft to produce some of the highest quality handmade hats in existence. The brand hand selects each of its yarns for softness and durability. The Spacecraft Forcefield Beanie is hand knit from durable, high-quality acrylic yarn. It has a standard waffle-knit texture, which is thick and warm. Earflaps and tie strings provide extra protection against the cold.