Amazon.com: Pyrex Portables Large Hot/Cold 6 Pack for Freezer or Microwave : Health & Household
Vesture Microcore 8" x 12" x 1" Heavy-Duty Thermal Hot or Cold Pack - 40 oz.
Amazon.com: Vesture 7" X 10" Microcore Replacement Hot Red Pack for Microwave Heating - Durable and Stays Hot for Several Hours : Health & Household
Amazon.com: Pyrex Portable Black/Red Insulated Casserole Carrier for Hot or Cold Food, Holder for Picnic, Potluck, Cookout – Comes with (2) 233 Glass Baking Dishes/Lids and (2) Hot/Cold Packs: Home & Kitchen
Portables Hot / Cold 11.5" X 7" Unipack | Pyrex
Vesture Hot Pack-Replacement Microcore Pac for Casserole Carriers | eBay