This is a pack of 30 bags to hold floss skeins. Note that they do not come with a storage ring. The snap lock bags are 7.6 x 13 cm in size and they have a panel on the front to write the colour number. The bags are then attached to the easy-opening ring. You can fit as many bags onto the ring as you want, so you can hold all you need for your current project. Great for travel as bags & ring are very compact. Similar to Floss-A-Way bags. Note that we also sell a starter pack of 15 bags which includes the storage ring, and a pack of 100 bags.