G4GADGET Freezer Blocks Ice Brick Pack Block Blocks Freezer Cooler Bag Box Travel Picnic

Great product, useful for school lunch boxes to keep things cool. Size of product is small but works well when put in cool bags for picnics with the family. Well made material and would last. Would purchase again.

They are very tiny so you’ll need many to keep the temperature down, they do work well especially if you have very little space.

Compact size so perfect for using in small cool bags. Great colours so easily found in freezer. Sufficent weight & seem to stay cold for good few hours. Recommend for value for money. We also use in freezer compartment in campervan

No, I didn’t check the measurements - Yes I should have done. Is it a problem? Not really. I bought these in preparation for use with a cold air fan - that uses ice blocks/water for cooling. I wanted a smaller size ice block as I was concerned the usual size, the ones you think of in lunch boxes, may not fit. So, the smaller size is actually welcomed. These can still be put to use in my work lunch box, although I’d recommend putting 2 in an average size lunchbox for best cooling. I think 1 would struggle for good coverage given the small size. I can’t comment on the longevity of the ‘freeze’, as I’ve not used them yet. They look well made, and the wife is happy to put them to other use once the sun disappears once again.

Used in a cooler bag, helped to keep the drinks and food cold all day. They are Small so are ideal for both smaller backpacks and large.