Why is my snake so wrinkly?

[ancybo]

what kind of enclosure are you keeping him in, and how often do u feed him?

I've only had him for 10 days. I fed him last friday. I bought him from petco so I don't have any idea how often they were feeding him there.

I keep him in a 20 gallon terrarium. i keep the humidity up with a damp rag over the top, it seems to be working quite well.

That, to me, looks like a snake that's going to shed soon...

How are you measuring humidity?

I have an analog humidity gauge. Probably not super accurate but I've been keeping it ~65-70%