I ordered some solder paste for digikey about a week ago, came in a massive box, in the box was the standard receipt/invoice, some of their mesh-cardboard packaging, then a huge foil insulated bag with 4 ice/freezer pouches in it, inside that bag, there was another,with another 4 pouches, then inside that was another foil bag with the solder paste and 2 more pouches, both which were still very very cold after 3 days!