Onyx stainless steel mini ice pack

Onyx stainless steel ice pack made from high quality, food grade 18/8 stainless steel filled with distilled water. Quickly freezes in 2 hours and can keep lunch cool for 4-6 hours. Small slimline size ideal for smaller containers and lunch bags. 11cm L x 6cm H x 0.8cm W.
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Customer ratings and reviews
Now I want one for myself.
I got my (adult) brothers these for Christmas last year as they carry their lunches to work. The ice pack is small but super sleek and I think they both appreciated the fact that it didn't look like something you'd find in a kids lunchbox (not that I think there's anything wrong with that, but for some it might matter). The price is on the high-side, but I can't imagine ever needing to replace it.