When you are on the go the whole time and hydration is key to keeping you moving, these bottles are excellent. Simple to use (my 2 year old was use one by 15 months), they don’t added any taste to your water, easy to clean and no extra bit to go wrong, using the best mantra for great outdoor gear, keep it simple!! I have mines at arm’s reach all the time. The only down side to this product is the cost to replace the bite valves for the kid’s bottle, when they take the idea of bite valve a bit too literally. Over all a great bit kit and highly recommended for everyday use