I throw them in my carry on and take my pre-workout and creatine with me routinely. Very happy with the product.My husband turned me on to this brand and wouldn’t let me use his shaker (same brand). So had to buy my own and got this too. Both are amazing products - has not opened once in my gym bag. Sturdy and holds a ton per container. I use it for protein powder and snacks (nuts, etc). Defiantly worth the price!This is absolutely perfect for traveling and storing protein powder. It fits my morning 2 scoops perfectly. It’s easy to clean and durable. Highly recommend!ShakeSphere has some incredible products that I really love and are well worth the price.. this is not one of those products. Exorbitant pricing for the size and quality. The stackable containers are slightly off-center causing them to screw on and off awkwardly. They creak and squeak and it becomes a bigger hassle to use than it is to put anything in. It's great for portability but this is not for home use given how small and inconvenient it is to open. That said I love the design and think it's very cute. I don't regret purchasing this, but I am let down knowing the quality of other ShakeSphere products. I can say confidently the product I received is not worth the price.I love the easy screw on and off levels, they can hold 2 scoops of protein no problem. I use Pre, Mid, and Post workout supps and it's easy it fill and toss in the bag if I'm not going straight to the gym, and I can remove a level for what I don't need if I am!wish it had more than the 1 lid so it could be separated if neededIt's way bigger than I anticipated, this thing could hold half a tub of gfuel between the 3 containers. I was hoping for something small enough to hold single scoops, not 10. However it still looks and feels like it's decent quality so I won't give it a bad score.Update: I've taken to using it anyways even though a single scoop barely fills them, and it's really nice, nice enough to bump the score up. Seriously, make one roughly half as big or even 1/3 smaller and I'd buy multiple!Carry this thing with me everywhere I go. Super convenient. Looks nice, and Carrie’s a lot!Looks very cool but the black outside coating attracts the powder and won't come off without a damp cloth. The opening in the lid is way too small so powder takes ages to shake out and bits get left behind making the curved bottom a waste of time! You can't buy single add ons so I had to buy 2 of these to have enough compartments. Don't waste your money - buy a cheap formula baby milk powder dispenser instead...Great but smaller than I thought. Good for travelling with protein or snacksUnfortunately this was broken either prior to or in transit