Last Confection Silicone Baking Mat - Set of 2 Non-Stick Half Sheet (11-5/8" x 16-1/2") Professional Food Safe Tray Pan Liners

Are these BPA-free?

Where are these made?

I bought 2 sets of these, never have had silicone before. baked a small pizza . It browned fine, but had a really plastic like taste. any hints?

One person said that the size stated was not accurate. Could someone please provide the true measurements for quarter sheet size?