I ordered a set of 3 large, and a set of 3 (one small, one medium, one large) cubes. I wish I had 3 medium, for my purposes. I find the small to be a bit too small to be of much use (although if I were single I could probably find a thousand uses for it - but I'm packing for a family of 4, including two very small children). Actually, the small cube could hold about 3-5 days worth of baby clothes, so it's not that bad - but it wasn't big enough for the whole week. I packed a week's worth of baby clothes in the medium cube, and a large cube was big enough for a week's worth of clothes for my husband or me. These are great, and I will probably buy more in a variety of sizes.