Imbibing this potion enables the individual to climb up or down vertical surfaces, with only a base 1% chance of falling. (Check at the halfway point, d%, “01” equals a fall.) 

A climbing potion is effective for 1 turn plus 5 to 20 rounds. 

For every 1,000 g.p. weight equivalent carried by the character, there is an additional 1% added to chance of slipping. If the climber wears armor, there are the following additions to the slipping/falling chance:

studded leather 1%

ring mail 2%

scale mail 4%

chainmail 7%

banded or splinted armor 8%

plate mail 10%

magic armor, any type 1%