I will only add I flipped my sacks inside out so there no loose threads to worry about if they squirm around during the trip.
With my recent move from Delaware to Wisconsin only a 16 hour drive but i had to stop at a half way point due to my personal traveling issues and the fact I had 6 sugar gliders with me. ( i even stopped at one place and was refueling and checking on everyone and I smelt that a snake turded lol. so I had a spare sack with me lucky. and I was swapping the sack out and a person saw me with the snake around my neck as i was emptying the dirty sack and tossing it in the trailer and put the snake back in the clean sack,. and spent like 30 minutes trying to talk me into selling her to them as they recently lost their snake from a week of no heat the previous winter. I could only imagine if they saw her daughter in the other sack lol what they offer.. but these gals are my children just like my gliders are.