I keep these in my work purse/bag. I keep my vitamins in them so that i can take them throughout the day (take with food). Its nice so i dont have big bottles to lug around. Perfect for weekend trips toos. I take a small piece of paper and write what pill in in what container and put it in with the pills , since some look the same. I also have the bigger ones and take collegen powder on long weeknd trips.My husband and I both love using these for work!(3) 100cc containers used for workout supplements (ie. Protein powder, pre-work, vitamins). Worked as intended. Convenient and compact for workout and travel. Portability at its beat for your workout needs.BeastThis is perfect for carrying pre measures snacks, protein powders, and supplements. I bought several. They open and close easily with a tight seal, and they can handle a clumsy drop or two without spilling.Disappointed about the exaggerated capacity of the "100cc" container. I can only fit 86ml of water at max capacity according to my scale, meaning this is only 86cc.I can't fit my 30g serving of ON Protein inside. Use "150cc" version instead.Otherwise I do like these containers and how they screw on top of each other.This is amazing for daily prescriptions or supplements. Not too big or small. Easy to open but stays sealed when needed. This is exactly what I hoped for to organize my pills.Absolutely love the versatility of these little gems! I use them for my morning powders that go into my drink! Super clean, efficient and the perfect size! You can take them traveling, put buttons or small items in them, or whatever you need! Clean and organized! JUST PEFECT!Update with PHOTOS! I think they are AWESOME! I use them for several different powders... It does depend on the type of powder though as to if it will stick or not. For example, I use one set for my 'morning' powder drink which includes a fiber powder and 'Active You' and these stacks are bone dry. Work extremely well and super convenient for me as I just grab and go.My second set I use for supplement powders including Cocoa for smoothies and the powders have more wetness to them. I will be leaving a new review for them online as this link won't let me include photos.So, bottom line, the drier your powders are, the less residue that will be left behind. I love them so much and actually have taken them on trips and they are so convenient!Habe die Behälter gekauft um Pulver ohne Probleme auch auf Reisen richtig dosiert mitnehmen zu können.Leider habe ich anscheinend ein Montagsprodukt erwischt.Die Behälter lassen sich ohne Kraft (oder evtl richtige Technik) nicht öffnen. Theoretisch vorteilhaft - praktisch doof, wenn man sich an die Anleitung hält und dann der Deckel durchdreht. Ich weiß es ist Plastik, aber so nachgiebig darf der Deckel nicht sein.Werde die Dosen als defekt zurückschicken müssen.2 von 4 behältern öffnen sich nicht. den Artikel kann man nicht einmal retoursenden.Ich empfehle es niemanden den Artikel zukaufen.schlisst man den Deckel fest lässt er sich nicht mehr öffnen.Die Dosen sind wirklich super und praktisch, allerdings lassen sie sich nur schwer öffnen.So ein schrottSuper praktisch und die Qualität ist wirklich gut.