Global Neck Pillows Market Assessment, By Shape [U-Shaped Neck Pillows, J-Shaped Neck Pillows, 360 Degree Neck Pillows, Neck Roll, Others], By Filling [Memory Foam, Polyester Hollow Fiber, Others], By Outer Material [Cotton, Polyester, Wool & Hemp, Silk, Others] By Application [Traveling, Homes, Corporates], By Price Range [Below USD 10, USD 10 – USD 20, USD 21 – USD 30, USD 31 – USD 40, Above USD 40], By Distribution Channel [Online, Offline], By Region, Opportunities and Forecast, 2017-2031F