The Kakūn Organic Pillow comes in four sizes in order to accommodate all body types. Travel/Kids size is perfect for your little one or for bringing a piece of your sleep sanctuary on the go. Standard size is best suited for a small or more slender body types. Queen size is our most popular, as is suitable for almost all body types, and it gives you the most versaility to customize your loft. It also gives you more room on the pillow for those who find themselves switching sleep positons throughout the night. King size is for those who truly want a larger pillow, or for larger or more broad body types.