Insulation for the small 7 x 7 x 6" box USPS supplies. This should help in keeping the feeders cool or hot in difficult 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
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!