SRD:Cloak of Etherealness

Cloak of Etherealness: This silvery-gray cloak seems to absorb light rather than be illuminated by it. On command, the cloak makes its wearer ethereal (as the ethereal jaunt spell). The effect is dismissible. The cloak works for a total of up to 10 minutes per day. This duration need not be continuous.

Strong transmutation; CL 15th; Craft Wondrous Item, ethereal jaunt; Price 55,000 gp;Weight 1 lb.