If you want to carry it in your hand like a coffee mug, there is a silicone handle above the bottle cap or if you want to keep it in your backpack as a thermos it's easily accommodatable. Not only that when you go indoors, you can also hang it on the wall as a vacuum flask. There is a waterproof silicone strip inside the lid, so there is no need to worry about water leakage. The water inside the cup is still not dripping whether you run, jump, or shake it arbitrarily - so use it as a water bottle as well. As rightly said, small space - LARGE scale.