I tried using TPU for a few different lids which were listed as designed for PLA and not of them were satifying - usually too loose, too short, or something else not optimal. The size of this is just about perfect for me. In fact it fits no snugly that I have to press the center (as opposed to the edges) as I push it on the can, or it holds air pressure and bulges a bit in the center. This is not a bad thing - it shows how well it fits. Very happy with this and I am printing more - thank you!