Keeping a reusable water bottle handy is a must, especially when you’re on the go. Human bodies are 60 percent water, so staying on top of your hydration game is key to functioning well. Straw lid water bottles provide an easy way to get your water intake up without the hassle of screwing and unscrewing a lid every time you want a drink. You’re also never at risk of spilling a tumbler full of liquid if you accidentally leave the flip top open. Here’s what you need to know before buying one.