Insulation fits USPS Box 12 x 12 x 8" & large cold pack. Their boxes are free. You can pick up at any post office or order them online and they will drop them off to you. Can't beat that! I use this for all my praying mantis shipping, summer and winter.

Insulation for Shipping, Lg. box & cold pack

$3.95Price
  • This Insulation is great for keeping your pets and feeder insects safe in shipping from adverse weather. (box not included). This insulation and a heat pack are all I use for shipping my precious cargo!

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