AnstoreReusable Ice Packs for Lunch Box,5 * 400ml Ice Blocks Cool Bags 16.5 * 9 * 3.3cm or 6 * 210ml Freezer Blocks for Cooler Bags 16x9x2.1cm for Camping Cooler Accessories

I needed this to keep produce frozen on a flight. The blocks are best frozen 3 days prior and I would recommend a proper insulated bag for optimal performance. The blocks bulge when fully frozen, which makes stacking neatly difficult but once loaded, they stayed in place. After 15 hours, the blocks were 90% frozen, no leaks and kept the produce iced. They’re also good value for money considering their size.

Nice and thick , Decent size and with the 5 packs in my cold box kept my butter, meat and milk whilst I was working away fridge temperature for 3 days without refreezing can fully recommend. Down side!! as there always is one, WHEN freezing make sure on a decent part of the freezer as they expand gov out of shape and slide

Works well but maybe shop around for bigger and better value

Great ice blocks . Long lasting and freeze up quickly. A useful size and sturdy.Delighted. Recommend.

THANK YOU, WILL DEFINATELY SHOP AGAIN :-)

not brilliant and no good for large cooler bags, or keeping ice cream for an hour in a cooler bag, if you don't keep already the freezer bags you get with ordering fresh food online, I would keep a couple in the freezer instead of recycling and use them, that is what I did and it seems to work better.

Needed for the cool box, sturdy and slim, left quite a lot of space for the food.

great product and delivered super quickly