I've purchased many of these fabric grow bags in the past, and these are much thicker and higher quality than many others. For some reason I was expecting them to be bigger - however this is my fault, as the dimensions are clearly listed in the amazon ad. I truly belief this kind of bag supports healthier plant growth by preventing overwatering and providing better temperature control, which is a huge issue in the hot climate where I live. I definitely recommend these, but would supplement with larger sizes in addition to the 3 and 5 gallon sizes.