SRD:Cloak of Arachnida

Cloak of Arachnida: This black garment, embroidered with a weblike pattern in silk, gives the wearer the ability to climb as if a spider climb spell had been placed upon her. In addition, the cloak grants her immunity to entrapment by web spells or webs of any sort—she can actually move in webs at half her normal speed. Once per day, the wearer of this cloak can cast web. She also gains a +2 luck bonus on all Fortitude saves against poison from spiders.

Faint conjuration and transmutation; CL 6th; Craft Wondrous Item, spider climb, web; Price 14,000 gp;Weight 1 lb.