I've got 2 balls (ha...yea), that I need to transport about 4 hours from college to home. Would it be "ok" to put them in the same snake bag or do they need to be separated (one is about 650 grams and one is about 300 if you need that info)? I've got the cooler set up and ready to go, just wandering if I need to find some pillow cases to use to separate them.