I'm not sure what “warmth” means since it's just a stand and not the lamp itself. As for “thickness”, the majority of the lamp is a pretty thin metal rod, but it gets the job done.If does not work perfectly with our lamp (we have the dual lamp that came with the ZooMed starter kit), but it hold the lamp up and I do not fear that it will tip or anything. It is easy to breakdown for moving or travel. It has many adjustments to fit appropriately over any size terrarium/vivarium.
Rating:
[4 of 5 Stars!]