When worn the robe conveys the following upon the wearer:
- Good physical protection and resistance to poison.
- Immunity to webs of any kind, including magical webs.
- Once per day the wearer can cast a Good strength web up to 60' that will cover a 10' radius area, snaring anyone within for 1-8 rounds.
- Once per day the wearer can charm up to 4 spiders (up to and including giant varieties) for 1 hour.
- Once per week the wearer can summon 1-4 giant spiders to serve them for up to one hour. The summoned spiders vanish when slain or time expires.