The PurlPod™ backpack has a separate yarn compartment built-in to the bottom of the bag (Image A). This unique feature protects the yarn and keeps it clean. Swift or wind the yarn into balls (or cakes) before loading. The roomy compartment has space for four or more balls of yarn (Image B). Grommets on each side of the lid allow the yarn to be fed into the bag. The yarn remains tangle-free and easy to access due to the clever PurlPod™ Yarn Feeding System.