cold but leaks
ScripHessco Reusable Hot/Cold Pack 5" x 10.5"
I use these in coolers to transport perishables because they get real cold, are the perfect size, and mold to the product ensuring total contact. However I found out the first batch I got quickly developed holes in the plastic and leaked the slimy gel all over. I now seal my ice packs in a heavier duty vacuum seal bag and they have held up under use.