In addition to ting proper sleep posture, the Hudson Gelly Roll™ Hot & Cold Therapeutic Pillow also provides hot or cold therapy to assuage a variety of painful conditions. This sculpted pillow has a head cradle made of slickened polyester fiber that comfortably supports your head. The cervical roll aligns your neck, reducing muscle tension so your sleep is fully recuperative. Inside the roll you"ll find a removable gel core, which can be chilled in the freezer or heated in the microwave to deliver hot or cold therapy to your neck. Cold therapy reduces blood flow and is ideal for treating migraines or swollen muscles, while hot therapy increases blood flow and is great for soothing the pain from arthritis or muscle spasms. Whatever your affliction, this pillow can help alleviate your symptoms and provide the support you need for restful sleep every night. About Hudson Industries Inc. President Gary C. Hudson founded Hudson Industries, Inc. in 1976. Since then, the company has reliably fulfilled the needs of the medical and consumer industries with innovative homecare products. Today, the company utilizes state-of-the-art equipment, clean modern facilities, and a trained technical staff to manufacture over 1,000 quality homecare foam products. Always striving to develop new and useful products, Hudson Industries listens to suggestions from home healthcare customers when designing new items and will custom make any foam product you need. Hudson Industries operates a medical manufacturing plant in Richmond, Virginia, and a consumer plant in Crewe, Virginia. * Removable hot or cold gel core in cervical roll * Fiber-filled head cradle * Removable and washable polycotton cover * Works with standard pillowcase * Dimensions: 15L x 21W inches