Polar Gear3 Pack 8cm Freezer Blocks Ice Brick – Long lasting Reusable Ice Boards - Cooler Block for Travel Picnic – Just Freeze and place in your Cool Bag Box to keep food & drinks cool – Navy Blue

I ordered these for a lunchbox. There's 3 in the pack that are really efficient and fit side by side in a school lunchbox. They are strong and just the right thickness not to take up too much room. They work perfectly for us and are great value for money.

These little cool blocks are perfect for my son’s school lunch bag!I had been using much larger block previously, but found that one of these fit in his lunch bag much easier. They’re the perfect size and are nice and light. They came in a nice navy blue colour, ideal for a boy’s lunch box!They have kept his lunch nice and cool and seem to be nice and sturdy, unlike others I have used.Would definitely buy again!

Fantastic product that keeps items cold for hours. Would highly recommend to friends and family.

These are great mini packs that fit lovely in my kids lunchboxes. They are full defrosted when they get home 7 hours later but have hopefully kept the lunchbox cool until lunchtime.

They are small but functional, especially for my lunch bag, which sometimes requires fresh food. However, despite their good quality and nice colour, they do not keep food fresh for very long - maximum 3-4 hours. It's important to check them regularly. So far, there have been no leaks.