frozen carry on

Use refreezable ice packs or block sheets as melt-free cooling substitutes. Many are BPA-free and non-toxic, can be cut or sized to fit bags, and reviewers report they keep items cold for several hours up to a full day depending on conditions.

Protein amounts vary by item, with examples in the search results showing about 8 g, 10 g, and 14 g per serving or sandwich — roughly in the single-digit to mid-teen grams per serving depending on the product.

Packages range from single-serve to multi-packs. Net weights shown include about 7 oz, 8 oz, 12 oz, and a 180 g option, and pack counts in the results include 1-, 2-, and 4-packs.

Most refreezable ice packs are labeled BPA-free and non-toxic and should be hand washed. Packaging typically advises against microwaving or placing the packs in a dishwasher.

Reviews commonly note child-friendly portions and strong kid appeal. Several items are also suitable for adults — some reviewers report repeat adult purchases — but portion sizes are often described as more child-appropriate unless otherwise specified.