This black garment is of great magical power.

When magic is detected for, the cloak will radiate a strong aura of the alteration sort. 

When wearing it, an individual will notice that he or she is able to climb just as if a spider climb spell had been placed upon him or her. 

In addition, the wearer is immune to entrapment by webs of any sort, and can actually move in them at a rate equal to that of the spider which created the web, or at a base movement rate of 6" in other cases. 

Once per day the wearer of this cloak can cast a double-sized web, as per the 2nd-level magic-user spell. 

Best of all, the wearer is less subject to the poison of arachnids, so that he or she gains a +2 on all saving throws versus such poison.