Insulation for the small 7 x 7 x 6" box USPS supplies. This should help in keeping the feeders cool weather. Please note, these fit in the small flat rate box and the 9 x 7 x 2" VHS box.
Small flat rate ship box, insulation & 72 hr. heat pack pack.
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!