The Camelback Quick Grip bottle is designed for runners. The sleeve allows you to hold it comfortably in your hand while running, and it also has several pockets to put keys or gels in. It's best for short/medium distance runs, since your hand will get tired after a while. It holds 21 ounces of water, and will keep it cool for substantially longer than non insulated bottles. The sleeve has reflective material all over it for running in the dark.
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Pro Does not leak
You don't have to worry about getting wet with this bottle, since it has a valve that keeps water from leaking out even when being swung around (as you swing your hands when running). To take a sip, just squeeze the bottle and the valve opens to let water pass through. For times when you are not using it, you can turn the valve to a locked position to be absolutely sure it won't leak in case it tips over or when you're holding it in your bag.
Pro Easy to run with
The Camelbak Quick Grip is lightweight, and holds more water than other handheld bottles, which makes for a good balance between the amount of weight you need to carry and the amount of water you can take with you in a single bottle. Many cheaper handheld bottles are also smaller, so you'd have to refill them more often, or plant water bottles along your route thereby interrupting your run more often.
Pro Keeps liquid cool
This insulated bottle will keep your drink cool (or cold, if you add ice cubes) on a very hot day for about 3 hours, which is much longer than any non insulated bottle.
Pro Comfortable to hold
The strap that goes under your palm is padded for extra comfort, and the strap that goes over your palm is adjustable. This makes the bottle cling to your hand, instead of your hand having to cling to the bottle, thus avoiding cramps.
Pro Easy to open
The Camelback Quick Grip has a screw top, which is covered with a rubbery material, so you can easily open it even if your hands are sweaty.
Con Hard to find the perfect hand position
Most of your palm will be snug in the sleeve, but you might have to fidget for a while until you find a comfortable position for your thumb. There are indents on the bottle, supposedly for thumb placement, but it still takes some getting used to.
Con Not comfortable for long runs
As with any handheld bottle, you will want to switch hands after a certain amount of time, which can be fidgety and interfere with your run. Some users have also reported that the strap becomes loose and needs adjusting every so often.
Con Most smartphones don't fit in the pouch
The sleeve has a rather small pouch for keys, gels, money or ID cards, but it is not nearly large enough to fit most smartphones. If you want to take your phone with you, you'd need to figure out another way of carrying it.