Not to mention when I have shipped, I tape the wamer to the bottom of the top piece of StyroFoam, that way it doesn't come in contact with the snake and it doesn't get tossed around potentially touching the snake in the bag. I use a standard "Perishable" insulated box, inside the box, I use Styrofoam on all sides and top, then I put newspaper inside, the snake goes in the reptile cloth bag, then a little newspaper on top, then I tape the cold pack or heat pack (I ALWAYS use 40hr) to the bottom of the top piece of Styrofoam and put a small little hole on each end of the box and thats it. Never had a problem and the people I have sold to tell me that they are impressed by my shipping.I learned everything about shipping from YouTube. Justin Kobylka is VERY thorough in all his videos! I'm in the process of getting FedEx certified, but for now I just use allproshipping.com.