I really wanted these to work. There isn't a whole lot of options for single-serving protein powder dispensers that fit into a normal water bottle.<br /><br />It *only* works decently well with Gold Standard powder (It must be a powder that doesn't clump *at all*. Think really really dry sand versus just slightly damp sand consistency. You need the really dry sand consistency).<br /><br />Nothing about this is special. Their venting technology is just simply unscrewing the cap. Doing this (see below) for most of the powders actually makes a mess, so I would suggest never opening the top when using. These are also very hard to hold on to when dumping them into your water bottle if your hands are sweaty or the least bit wet.<br /><br />I tested this against 4 protein powders: Combat, Gold Standard, CytoSport and Orgain Organic.<br /><br />Once you have filled the funnels, you turn them upside down and remove the small cap. Then put it straight onto an open water bottle. In theory, you would unscrew the large cap and the powder would slide into the bottle. This doesn't really work. If you unscrew the large lid a little bit, you will end up getting powder everywhere because you'll have to tap on the funnel to get all the powder in your water bottle. The tapping causes powder to escape the top where you loosened it and now you have giant mess.<br /><br />How to actually use:<br />1. Fill the funnel, screw on the large cap.<br />2. Turn over (small cap facing up) and remove the small cap.<br />3. Place the small end in your water bottle<br />4. Keep the large cap screwed tight<br />5. Tap the top 10-20 times to get the protein out of the funnel into your water bottle<br /><br />Do you look odd at the gym doing this? A bit.<br />Is this the best I could find after hours of searching? Yes.<br />Are they a bit over-priced for being a piece of plastic? Probably, but there aren't a lot of options either.<br /><br />Edit: After a couple months of using these, I'll say that the convenience out weighs the need to tap the top to have the powder come out.

These are larger than what I had invisioned in my head. They are perfect storage for situations where you would use protein or another type of meal replacement powder on the go. I have shaker cups and always end up forgetting them at work, in the car, or in my workout bag and They would get nasty. With these storage funnels it makes it easy to have my powder premeasured for any standard water bottle. No more worry with forgetting cups. This way you just shake, drink and recycle. My protein is 73cc scoops, the container fits 2 scoops easily.<br /><br />***Edit***<br />I contacted PowderJet via email after purchasing my large funnels. I really liked the small ones but had some questions before I sealed the deal on them. I work night shift, so while I was on my lunch break around 230am I sent out an email. By 9-10am I had a response addressing my questions and concerns. The PowderJet Representative was extremely helpful and pretty prompt throughout our email exchanges. By the end of our exchanges I decided to make the move on the small PowderJet funnels. Just received them in the mail, so I look forward to using them for pre-workout and my vitamins/multivitamins/pill supplements.

I have been using this for a while now, and I would say it is definitely a good buy. Just be aware that some of the products (seems like mainly Protein Powders) seem to clog a bit, and even though I open the top a bit that is supposed to have a jet effect it does not seem to work.<br />What works for me is with the heavier powders I simply go back and forth a bit as I am filling the bottle to allow air and loosen up the powder to get it to go in.<br />Overall I recommend as it is the best thing I found so far to manage my Powders into my bottles.

Q&A says &#34;This model size is 150cc which is typically 2 scoops of a protein powder.&#34;<br />Guess what, it only fits one. Granted, my protein powder scoop is pretty big (35 grams). You can probably squeeze another 5 in there, but that's pushing it.<br /><br />Not sure about the &#34;Smart Flow Technology&#34;. Sounds like a gimmick to me. I had to tap the side for the powder to come out. But that's the same problem with other funnel container.<br /><br />Lastly, why does amazon say I can't return the item? Such a rip off.

I ordered these for my husband who goes to the gym regularly. He usually drinks his protein shakes right after he gets home from the gym. This product helps him safe time since he loads all the storage powderjets a couple days before and just come home and uses one of them. It prevents him from having to spend the time doing it all at once.

The Good: Great as a funnel device. Great as a storage device. And great as a small mouth device to fill water bottles.<br /><br />The Bad: there is no “air jet” or “tube” to line up. The instructions and photo graphs are more illustrious and detailed than the product. Their is absolutely ZERO/NONE/NO ‘air flow’ or ‘jet’ actions. The powder doesn’t swirl or mix. It just dumps and glimpses right onto the bottle. (Which is why these are greatly as portable storage devices but SO MANY FALSE AND MIS ADVERTISED FEATURES THAT DO NOT EXIST ON THE ACTUAL PRODUCT ITSELF.