The overwhelming majority of camping pillows will cause no allergic reactions. Especially those that are blow up pillows. Stuffed pillows, however, may be on some people’s allergy radar because there are those who exhibit a sensitivity to down and other materials used as fill. Most pillow shells - whether blow up or stuffed - are fashioned from either cotton, fleece, nylon, polyester or similar materials. If you are concerned about possible allergic reactions always check both the shell and fill materials before making your purchase.\r