Silicone food bags are the newest food storage product on the market. BPA free, suitable for fridge freezer, microwave and dishwasher. You can even reheat food and meals by placing them in the silicone food bag and boiling it. So they are also fantastic for sous vide cooking. They come in 2 popular sizes of 1L and 1.5 L. The top opening is closed air and water tight by a slide on seal. If this is a bit stick just dampen the grove that it slides in for easy operation. Because of the very good seal on the silicone food bags, food will last longer and no more odours through the fridge. Silicone food bags are also non-stick so they are very easy to wash. They do not retain odours or stain. However if you do find something is left behind or hard to clean just soak in bicarb soda and water. Why not invest in a set of 2 silicone food storage bags today and revelotionise the way you store food in your freezer, fridge and pantry.