Pure Rest Organics takes their super pure, tested free of chemicals, wool and super processes it organically to remove vegetation, dust, and excess oils. The result is a lofty, clean wool that does not have the pungent odor of many natural and organic wools. They are offered in various weights to fit your needs. Light fill is recommended for back sleepers or tummy sleepers, medium fill for side sleepers, and heavy fill for large people and those who wish to enjoy a high, thick loft. They are covered with organic cotton European jacquard for a finished look.