I bought these bottles and was not compensated in any way by the manufacturers.
Ultimate Direction Fastdraw 20 oz.
The best thing about this bottle is it doesn’t leak. Even when you leave the bite valve in the “up” position, not a drip! Two other good thing are the larger zipper pocket that can hold more items from the previous holster (phone, gels, keys…I’ve stuffed it full!) and the thin, chafe-free hand strap. Unfortunately two glaring deficiencies about the bottle and holster need to be addressed.
First, the pull-strap is very thin and twists easily when adjusting on-the-go. With this holster you’ll find yourself having to constantly adjust because the strap doesn’t hold in place and constantly loses tension. The loose strap is very annoying and I found myself having to grip the bottle tighter than I would have liked to (which lead to hand/grip fatigue during my 50k race).
Second, the bottle itself is very firm and hard to squeeze when you need to have a strong flow of liquid. Personally, I had a hard time squeezing out a consistent flow as I bit on the valve, even harder during my early morning runs in the cold when my hand is numb from the cold.
A wider and calloused pull-strap may help with keeping the holster snug to the hand. Softening the plastic a bit to allow a better squeeze.
Simple Hydration Bottle – 13 oz.
This is an innovative approach to carrying liquids. Simple deserves credit in trying to design a bottle that is easy to carry in the hand and also stuff in your shorts. I think they saw pictures of ultra-runners stuffing bottles into their tights and were inspired to make something for the masses that would like to have a hands free experience without the need for belts or packs.
After using the bottle on four runs ranging from 4 miles to 14, I found the bottle to be more of a nuisance than a relief. Three things stand out the most.
First off, the bottle cap is hard to pull up. I found myself having to bite down hard and jerk the cap up to start the flow of water. It also doesn’t go back down very easily. In fact, when you push down on the cap you’ll find it doesn’t go back down completely. When I squeeze the bottle while the cap is down a small drip starts. Not what you’d want if you were holding the bottle during a run. (The bottle is a softer plastic and easy to squeeze, which is good for a consistent flow of water.)
Second, the bottle lid doesn’t form a tight seal. When the water sloshes around the bottle, a consistent drip appears. Only when the water level is half full does the leak slow. Very annoying for me during my long run because I can feel the water soak my shorts early on the run.
Third, the bottle will weigh down your shorts! I first wore the bottle with my regular run shorts. While the bottle did fit comfortably on my back, I noticed the weight of the bottle start pulling my shorts down. After running half a block I had to pull the bottle up from my shorts and hold it in my hand because my shorts were well on their way to being around my ankles. The hook on the bottle that is supposed to hang on the shorts slipped from the waistline and the bottle went down my shorts. Only when I wore my running short tights did the bottle manage to relatively stay in place (as it continued to leak). As I ran downhill, the bottle moved around a lot and I found myself having to reach back and realign the bottle vertically while sliding it back to a comfortable position around my waist.
Smaller bottle size (maybe 10 oz.?) will lessen the tendency for the bottle to weigh down shorts. Lengthening the “hook” while narrowing the gap may help with keeping the bottle on the shorts. Rubber bite valve similar to the Ultimate Direction bottle or adding a rubber gasket to the plastic cap while loosening it may help with the leaking. Softer plastic lid may help fill in gaps around the contours of the bottle where the lid screws onto.