Victory from on high.
The Titans Shoulder Charge ability really gets a boost from both their exotic boots but where the Stand Asides focused on the ground based movement, the Peregrine Greaves focus on how your Guardian functions while airborne. In order to actually utilise this exotic effectively, you will need to be a Striker Titan in order to get access to Shoulder Charge. The exotic perk, Peregrine Strike, grants bonus damage to Shoulder Charge if it is activated in the air. Your Titan does not have to be extremely high up though and as such can easily grab the damage boost. Now, for this exotic perk to actually see some use, your Titan will need to be an avid fan of Shoulder Charge, as there are many other great Titan exotics that you can choose from and that will give you a better range of benefits. Secondly, you will need to be using Shoulder Charge while in the air so if you are not comfortable activating that ability while off the ground, definitely choose a different exotic. This exotic will have more functionality in a PVE setting as Shoulder Charge within the Crucible is already a one hit kill and so the damage bonus will serve to only act as insurance because overkill is definitely better than no kill.
The Peregrine Greaves have quite a unique look to them which makes many Guardians want to add it to their collections despite its limited functionality. There are a six bluish orbs, three on each leg which have an unknown function. On top of this, are the long, spike like objects that project out of four of the orbs as well as two that project from the back of the feet. It seems that they fit well with the airborne theme and are almost guiding your Striker to accurately strike where it needs to strike from on high.
How to Acquire it?
The Peregrine Greaves can be gained from an exotic boot engram or purchasing it from Xur if you are lucky enough for him to have it in his inventory.