Open it up, put your stuff inside. Your most valuable things. Carry them everywhere. Take them to the river. Go swimming. Don't worry, it has a zipper, your precious snacks and trinkets won't fall out. BONUS - Zippered inside pocket for your delicate and/or semi-secret items. Why don't more brands put zippers on their tote bags? Because they are not the supreme brain geniuses at TACTICS, next question.