Well, I can’t say much about “for life”, but I bought a batch of Rubbermaid trays back in 2008, and they’re all still in use. No cracks, no problems. I added to the original 4 a couple of times, and the most recent two pack is indistinguishable from the older ones in thickness or coloration. So I’m fairly confident that the new ones should last just as well.

I’m also going to chime in about the silicone trays. They work fine, but I’ve had a lot of trouble with them picking up odors, like from being washed with scented soaps. Never had the issue with regular plastic.

However, there are also the old school metal trays that last for bloody ever. Might be worth looking into