This is one large size hard shell ice packs by Cryopak, which is one of the leading manufacturers of quality ice pack products. The ice pack is roughly 8 inches tall X 8 inches wide X 1 inch deep. These are perfect for coolers! Keeps food and beverages cold for hours! Great for camping too! These come filled with liquid and there is no need to refill them. They can be used over and over again. Get yours today! Quantity is limited!