Product review (5 stars): So glad I tried it!
I have been looking at these silicone lids for a while and finally decided to purchase one.  I have not been disappointed!  Not only is this lid a great price for the money it has a great suction and holds the heat in well.  I use it to replace aluminum foil in baking.  I do not like the chemicals from the foil covering my food and this does an even better job at sealing the dish.  I would definitely recommend this product!