Thermos Freeze Boards, 1 x 800 g/2 x 400 g, Pack of 3, Blue

Work well . Perfect fit for a thermos cool bag. Maintained cooling for a day long trip .

The media could not be loaded. If you need to keep things to keep things cool in a larger food bag, these are amazing for picnics or travelling! They are well made. They are slim but effective! The largest board is impressive and works so well! They freeze quickly and stay cold for a good many hours . I was worried that the large one wouldn't fit in my freezer but it's so slim that it slotted in easily! The smaller ones might be a bit big for a kid's lunchbox but for keeping a bigger bag of food cold, they're amazing!

These are slim freezer blocks that fit comfortably into most cool bags and boxes. As such, they can be inserted between bottles and tupperware boxes to give maximum and even cooling.I use them in our Thermos 30l cool bag where they fit perfectly.They take about 3 hours to freeze solid in a domestic freezer. They do swell a bit in the process - but that's normal for blocks of this type.They are relatively lightweight but seem to be very effective. In a well stocked cool bag, they easily last for 6+ hours - even in a high ambient temperature (but don't leave the cool bag directly in the sun!).Thus far, we have no complaints ☺️☺️

Good quality thin bricks. Use in my igloo cooler on the top. Good freeze retention. Good value as a triple pack

This is very good product. The size is very thin, easy to put in to the freezer and your ice box. I purchased in prime day deal just 5 to 6 pounds.

Great

We bought these freeze blocks to keep frozen food frozen for a long trip to our self caring cottage in Scotland - the journey was about 10 hours during the hottest days we can remember for years and we weren't very optimistic about whether this would work in those conditions. We put the big one on the bottom of the freezer bag and the 2 smaller ones at the sides10 hours later we unpacked the freezer bag - the frozen food was still perfectly frozen, as were the freeze blocks - they had worked perfectly.The boards are light and thin so they don't add much weight to carrying them and very little space is needed. Excellent - very glad we bought them

had two packsstarted well then a few a few times of usage they started to bulge on the sides and one in the middle i can only guess why, they still work but not as well as i expected and price i paid for them shame tho