This is a small sized gel cooler. You want to use it while you cool your cold gel. It can be used as a replacement for those times, so it is very convenient. 1 set contains 4 of the same size gels. If you purchase multiple items, we will package them together. Thank you for your understanding. Size: 3.1 x 2.6 inches (8 x 6.5 cm); *This is a small sized gel cooler. Please check the size before purchasing. Set of 4 ice packs. *Please touch the part of the refrigerant frequently occurs during use.