Climb Swep

Free Runners spawn with this item, you can also purchase it through the credit shop. It can also be used during parkour events. Climb swep will by default have a total of 5 climbs. However, the Hoodrat skill increases the amount of climbs you spawn with. Level 4 of this skill will give the player 1 additional climb, leaving them with 6 total climbs. Maxxing the skill with Level 5, will leave the player with a total of 7 total climbs.

It lets you climb to places that you normally would not be able to get to without a climb swep. 

Fun fact: In first person view, if you reload mid air, while climb-jumping it will perform a client-side somersault.