These should be adequate at providing consistent cooling within a closed container. It should be durable and not leak contents.
Single-use ice packs aren't the safest things in the world; luckily, we have some of the best reusable ice packs we can reuse. It stops the amount of plastic being used, and the materials are usually safer than single-use. Reusable Ice Balls $3.75 SKU CU176 Quantity Quantity Add to cart Share This: Share on Facebook Tweet on Twitter Share on Google+ Share on LinkedIn Pin on Pinterest.