iscoFlex Cervical Pillows available in three sizes – Medium BR1550MD (18?w x 12?l x 3?/4?h), Queen BR1550QN (24?w x 12?l x 3?/4?h) and Large BR1550LG (18?w x 12?l x 4?/5?h).Visco-elastic memory foam specially shaped to support your head in correct alignment with your spine.Helps to relieve back, neck and shoulder pain.Air-duct system allows the pillow to breathe and remain cool.Good for allergy and asthma suffers.Washable, allergy treated cover.The visco-elastic pillow adapts to the body, which allows a better night’s sleep.