From the Manufacturer:
Perfect for the crafter on the go! The Yarn Drum holds up to 8 standard sized skeins of yarn! Yarn in use can easily be removed from the tote from an opening in the lid. The adjustable strap can be used 3 ways, making transport of knitting and crochet projects a breeze. The Yarn Drum has a textured PVC base that keeps contents dry on wet surfaces.