Most super-heroes have to fret over the state of their costumes, checking them for the constant wear-and-tear that a life of adventuring entails. Costumes are regularly burned, shot, cut, boiled, and blasted off their wearers, and must be completely replaced… but not yours! You own a nigh-miraculous costume that is probably tougher than you. An Amazing Costume simply cannot be destroyed, damaged, discoloured, or distorted. It will re-size itself to the wearer’s frame, including shifting sizes, keep itself clean, and allow itself to be worked or reworked when its owner (and only its owner) desires a change. The costume may contain whatever regular armour or materials the character desires, other than Power Armour. Although the costume cannot actually be affected by any force on Earth, it will offer no special protection to its wearer. You could fall into a vat of acid and die, but the Amazing Costume would bubble up to the surface, unharmed. Where you got this miraculous bit of tailoring is up to you.
Limitation: Permanent Costume
Your Amazing Costume never comes off. It’s effectively grafted onto your body. How you use the bathroom or perform other personal, bodily functions is a mystery.