Floss-Pak 100 Bag Pack. Convenient. The Floss-Pak is the easy-to-use way to keep all types of needlework threads clean, organized, and protected. The 3”x5” zip close bags have a write-on area for the color number. Economical. The Floss-Pak costs only pennies per zip-close bag. And with three package sizes, your customers can buy as many or as few as they need. The Floss-Pak Is A Good Investment! Even for the occasional stitcher, the Floss-Pak will more than pay for itself. No more lost skeins. No more tangled balls of thread that eventually get thrown away. The Floss-Pak keeps each skein as fresh and clean as the day you bought it. From Yarn Tree. A great way to organize your embroidery floss or other threads.