system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: why do materials like glass and metal feel cold, but materials like wood and plastic don't, even in the same temperature environment?
gpt
Technically they both are room temp, but the key here is you “feel” them differently. This is because wood and plastic are insulators and the metal is a conductor.

Now the importance of this is because when you rest your hand on an insulator (wood for example) the heat from your hand has no where to go so you feel it in the spot you touch.

Metal on the other hand is a conductor so when you touch it the heat evenly travels through the medium and it doesn’t feel as hot because the warmth from your hand isn’t just in the spot you touch and is easily dissipated into the air via the radiator effects. 

TLDR: the difference between them is ones an insulator and the others a conductor. And they are the same temp, but feel different based on how energy travels through them.