🏆 Editor's Choice
Reviewed by Marcus Knapman, BSc (Hons) Computing ·
Researched from 100+ Amazon customer reviews
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Six ice packs for £6.65 sounds almost too good to be true. I've seen single freezer blocks cost more than this entire KEPLIN multipack, so naturally I was suspicious about the quality. After digging through the specs and customer feedback, these little gel packs might just be the bargain cooling solution your lunch box has been waiting for. At roughly £1.10 per block, they're certainly priced to move - but do they actually work when the sun's beating down on your picnic?
Each block measures 15.5 x 8.5 x 2.5cm, which puts them firmly in the compact category. They're designed to slip into lunch boxes without taking up half the space, and at this size they should fit most standard cool bags. The gel formula inside is supposedly the long-lasting type, though KEPLIN doesn't specify exactly how many hours 'long-lasting' actually means.
The multicolour aspect gives you a rainbow of cooling options - handy if you're organising multiple lunch boxes or just prefer your ice packs to have a bit of personality. They're made from BPA-free plastic with heat-sealed caps, which addresses the obvious safety concern of gel leaking into your sandwiches.
KEPLIN promises these blocks will keep food and drinks 'freezer cold' for hours, even on hot summer days. That's quite a bold claim for budget ice packs, and the reality is likely more nuanced. From what I can gather from the product specifications, the gel formula is designed to maintain low temperatures longer than traditional ice, but you're not going to get the same performance as those chunky professional-grade blocks that cost £15 each.
The lightweight design means they won't add much heft to your bag, but it also suggests the gel volume is fairly modest. Physics dictates that more thermal mass equals longer cooling time, so these are clearly optimised for convenience rather than marathon cooling sessions.
The reusability factor is straightforward - chuck them in the freezer overnight and they're ready to go the next morning. The easy-clean surface means you can rinse off any lunch box mishaps with soap and water, which is more than you can say for some ice packs that seem to attract every sticky fingerprint within a mile radius.
At 15.5cm long, they should fit most lunch boxes, though you'll want to measure yours first. The slim 2.5cm depth is actually quite clever - thin enough not to dominate your food space but thick enough to contain a decent amount of gel.
Here's where I need to be honest about limitations. These aren't going to keep your drinks ice-cold for an entire day in 30-degree heat. The small size and budget price point mean you're getting basic cooling performance, not miracles. If you're planning serious outdoor adventures or need all-day cooling in extreme temperatures, you'll probably want something more substantial.
The plastic construction also means they're not as robust as some premium alternatives. Whilst they're described as puncture-resistant, I wouldn't want to test that claim with sharp objects bouncing around in a rucksack.
For basic lunch box cooling and short picnics, these KEPLIN blocks offer solid value. They're perfect for school lunch boxes, office meals, or day trips where you need a few hours of cooling rather than Arctic conditions. Skip them if you need heavy-duty performance for camping or all-day events.
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