I bought the pouches with the intention of using them in a tourist environment to prepare meals on a pour-over basis (freeze-dried food and oatmeal). In this role they have worked perfectly. The closure is tight enough that I could tuck the bag under my jacket on frosty evenings to warm my body - the thick silicone prevents you from burning yourself. At the same time, the whole thing is stable enough that an open bag can be placed on the ground without risk of spilling the contents. Washing is problem-free, the material does not take on the colour of tomato and pepper dishes. The only drawback I have found is the recesses in the closure strip, where food particles can collect if used carelessly. For this reason, I cannot use the bags like a jug to pour contents other than rare liquids out of them.