Lakeland Silicone Oblong Cake Pan 5 "Excellent product" Katherine 09 December 2011 What on earth have other people been baking that creates this bulge problem?? This was the first piece of silicone bakeware I ever bought and I since replaced all my old tins with the stuff. No more messing around with greasing and lining, just perfect results Every. Single. Time. And not once has it created a bulging cake!