A pillow that includes a substantially u-shaped pillow body having a medial region and a pair of legs that extend from the medial region to define an opening therebetween. The pillow body includes a casing defining an exterior surface and interior surface of the pillow body. The interior surface defines a lumen of the pillow body, and the lumen is a single continuous interior compartment. The pillow body includes an interior core disposed within the lumen. The interior core may include a flexible insert in a rolled up configuration that substantially fills the interior core. The casing may include a top fabric member, a bottom fabric member, and a middle fabric section that runs along the curved outer periphery and curved inner periphery of the casing, and is attached to the top fabric member and bottom fabric member.