Choose a large duffel bag for traveling. Select an expandable duffel bag if possible, which allows you to change the dimensions as desired. Manufacturers offer small to large sized duffel bags for different travel needs.
Fold a feather or down pillow in half to fit into smaller duffel bags. Fluff the internal feathers once the pillow is removed from the duffel bag. Loosen compacted feathers with a short spin in an automatic laundry dryer on the warm cycle.
Choose an inflatable travel pillow that can fit within your duffel bag. Deflate the pillow's center section, which allows you to fold the remaining outer layer of synthetic fiber construction into the duffel bag.