This is really a great part. When unpacking, I am a little shocked by the size, but because I got used quickly. It easily fit 18 kg bag TF complete with bag pure. If both are to cover, you really enough nothing from the feed. The top, gray cover is initially a little hard on and, after having used it for several days, but it works well. Also you can roll the part despite full load of 20 kg still good. We use the container now since 4 weeks and are very satisfied so far. The slightly higher price is justified in my opinion.