If you want to increase your relaxation consider the Herbal Pillow set, one pillow is designed to fit around the shoulders & one to fit at the waist for the lumbar spine or limbs. The Pillows are designed to be frozen in the freezer or heated in the microwave. Special design also allows them to be used during inversion to increase circulation to tense muscles & speed relaxation; they can also be used on their own. They are filled with 100% natural ingredients featuring stress-relieving aromatic herbs.