Slippers of Spider Climbing

Wondrous Item, Uncommon (Requires Attunement)

While you wear these light shoes, you can move up, down, and across vertical surfaces and along ceilings, while leaving your hands free. You have a

A Climb Speed can be used in place of Speed to traverse a vertical surface without expending the extra movement normally associated with climbing. See also Climbing and Speed.

equal to your

A creature has a Speed, which is the distance in feet the creature can cover when it moves on its turn. See also Climbing, Crawling, Flying, Jumping, Swimming and Combat.

Special Speeds. Some creatures have special speeds, such as a Burrow Speed, Climb Speed, Fly Speed, or Swim Speed, each of which is defined in this glossary. If you have more than one speed, choose which one to use when you move; you can switch between the speeds during your move. Whenever you switch, subtract the distance already moved from the new speed. The result determines how much farther you can move. If the result is 0 or less, you can't use the new speed during the current move. For example, if you have a Speed of 30 and a Fly Speed of 40, you could fly 10 feet, walk 10 feet, and leap into the air to fly 20 feet more.

Changes to Your Speeds. If an effect increases or d ... [more]

. However, the slippers don't allow you to move this way on a slippery surface, such as one covered by ice or oil.

Source: Dungeon Master's Guide, p. 304