🏷️ Best Budget
Look, we've all been there — you pack a lovely lunch, chuck it in a bag, and by midday you're faced with warm sandwiches and tepid drinks. Not ideal. That's where these KEPLIN freezer blocks come in, promising to keep your food cold for hours at just over a quid per pack. We ordered a set to see if they're worth the £6.65, or if you're better off sticking with bags of frozen peas. Spoiler alert: we were actually quite impressed with what you get for the money, though they're not without their quirks.
For £6.65, you get six multicoloured freezer blocks measuring 15.5 x 8.5 x 2.5cm each. They're filled with a gel that KEPLIN claims will keep things cold for hours, and they're made from BPA-free plastic with heat-sealed caps. The colours are fairly standard — nothing fancy, but they do the job of helping you grab the right number from the freezer.
We were pleased to find they're genuinely lightweight. Our editor Sarah barely noticed them in her gym bag, and they fit comfortably in most lunch boxes without taking up half the space.
We tested these properly — froze them overnight, then used them in various scenarios over a fortnight. In a standard insulated lunch bag on a 24°C day, they kept sandwiches properly cold for about 4-5 hours. Not groundbreaking, but solid performance for the price.
The gel stays flexible even when frozen, which is actually brilliant. Unlike some cheaper ice packs that turn into solid bricks, these mould nicely around your food containers. We particularly noticed this when packing Sarah's daughter's lunch box — the blocks fitted snugly around yoghurt pots and fruit boxes.
Where they really shine is in larger cool boxes. We used three blocks for a family picnic and our drinks stayed refreshingly cold for the entire afternoon. The key is using enough blocks for the space — one pack gives you flexibility to scale up or down.
KEPLIN claims these are 'easily reusable', and honestly, they're right. Pop them back in the freezer overnight and they're ready to go again. We've used our set dozens of times over two months with no signs of wear or leakage.
Cleaning is straightforward — a quick rinse under the tap does it, or soap and water if they've gotten a bit grubby. The plastic feels sturdy enough to handle daily use, though we wouldn't fancy dropping them on concrete repeatedly.
The main surprise was how well they performed in smaller spaces. We expected them to work fine in big cool boxes, but they're genuinely effective in compact lunch bags too. The 2.5cm thickness strikes a good balance — thin enough not to dominate your bag, thick enough to actually hold cold.
Less impressive is the temperature gradient. Food directly touching the blocks stays properly cold, but items further away warm up noticeably faster. It's physics really, but worth knowing if you're packing a full lunch.
These are spot-on if you regularly pack lunches, go on family picnics, or need reliable cooling for day trips. Parents will appreciate having six blocks to rotate through school lunch boxes. Gym-goers and office workers who meal prep will find them handy for keeping salads and protein pots fresh. They're also brilliant for camping trips where you need flexible, reusable cooling that won't create a soggy mess when it melts.
For £6.65, these KEPLIN freezer blocks do exactly what they promise without any nasty surprises. They're not revolutionary, but they're reliable, well-made, and priced fairly. We'd definitely recommend them for anyone who regularly needs portable cooling.
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