Hello! I've had a 15" MacBook Pro for a while, and I keep it stored in a snug-fitting Incase neoprene sleeve when not in use. I always power it down before putting it away for the night. I'm aware that doing so puts some additional wear and tear on the hard drive. Ideally, I'd like to just shut the lid and store it while it's in sleep mode. My question is: is it safe to do so in its sleeve? I'm concerned that, since it's still switched on, it may overheat and I'll be the proud owner of a very pretty, brushed aluminium brick. I'd appreciate any advice from you Mac veterans out there. Thanks in advance.