When I transport a snake I make sure it is very secure. We have threads here every year about someone who has lost a snake in their car, or don't even know where they lost it. So I put a hatchling in a deli cup or Gladware with holes, with aspen or CareFresh, and put that inside a large Sterilite feeding container. (Which has air exchange where the handle goes in). Then make sure you don't leave it in a hot or cold car, so if you have to stop, have a bag or purse you can put the whole thing in to bring it in with you. A juvenile or adult goes in a snake bag, in a Sterilite so it can't be crushed.