very convenient but all the same a bit expensive it complements well the range, I use it to keep cakes and salads rather than for marinades (food saver expects to get out of soft plastic boxes larger than those available now) Also the price there another default; the vacuum set proeminent system that does not allow to stack the boxes which takes up space in closets and especially in the fridge but good as there 's no big boxes in the range are made with