This container is huge for a reason. The post section just holds two scoops of what I use and I can fit the funnel in there also.<br /><br />The pre section seems way too big for itself but I just fill it with water instead of pouring my pre into another container.<br /><br />I don't understand how people don't understand how to use the funnel. It's a damn funnel. You use it like a funnel. It doesn't click in or fit a certain way or anything but you can use it to pour into smaller bottles if needed. My bottle is big enough to just tip this into it. Every shaker I've ever owned is big enough to tip this into it. I actually use the funnel just to guide it in and make sure it doesn't spill off the side.

I have been adding water, as others have said no to do, and have had zero issues. No leaks. It is perfect.

I bought this because currently I have one class in the morning and one in the afternoon, so I go to the gym in between classes instead of at night or early in the morning. I wanted something to hold my pre-workout, and the supplements I take after my workout. I'm not a big body builder or anything, I just enjoy working out so I only take 1 scoop of pre workout (C4) and a scoop of amino acids after (BSN Amino X). This product was designed for this. Bad thing is that it is way too big. The compartment for pre workout holds up to half a cup and the compartment for post workout holds more than a cup. My 1 scoop of C4 just makes a thing layer and I could probably hold at least 20 more scoops in there. My one scoop of amino acids is not even 1/4 a cup. So it'll be perfect for people that have to take multiple scoops of pre workout and like to add in creatine before, and take two scoops of proteins/aminoacids/creatine. But for me, I wish it was smaller.<br /><br />It does contain 1/4, 1/2, 3/4, 1 cup (and ounce) markings where it can.<br /><br />I may put my amino acids in the pre workout spot and then a lot of pre workout into the post spot because the pre worout scoop fits in there and then I won't have to refill that often. I just feel with so much extra space, the powder flies around, then when you go and open it, it floats off.

The picture makes it look like the top and bottom containers are somehow funnel shaped--they aren't, it's just a cyclinder. The funnel itself is completely useless. It's not big enough at the top to really make it easy to dump protein in and it doesn't reduce the likelihood you'll spill powder. The narrow end of the funnel is too narrow and protein powder doesn't actually move through it.

I used this product as a companion to the gym and I found it be very convenient. I just add water from the fountain on my way out, and my post workout and it's good to go. The hard plastic construction makes it durable, but I would not recommend putting it in the bottom of the bag because the top may crack. Great product, no issues, great for making gains.

The POST compartment has enough room to fit 2 scoops of protein powder (considering the biggest size scoop that some brands use such as Body Fortress Whey Protein or Six Star Elite Series Protein)<br /> or even 3 scoops (considering the regular size scoops such as Optimum Nutrition Whey Gold Standard Protein).<br />The PRE compartment is very spacious. Can fit about 6 scoops of small scoops (such as c4)<br />or 2 bigger scoops (such as N.O. Xplode)<br />Is very convenient so I don't have to carry around my large containers in gym bag.<br />I don't use the funnel but I can see it being helpful if you use a bottle instead of shaker to mix products