This Bubble Bags are the size of an average book and are thus well suited for the delivery of paperbacks or as bags for the collective "Büchersendung" ideal. With 50 pieces so you have some time material, as long as you do not sell books every day. I have this Bubble Bags by providers MEXXTRONICS! purchased for 10.78 WITHOUT delivery, although the mission was to me abroad. For this price, I find the goods all right, especially since you / only just over half the amount given in retail at Deutsche Post for the price here. I would anytime again ordered me so.