You fell down on the dark void not knowing what this place really is. You saw a skeleton from afar. That skeleton has a dark blue long overcoat that reaches below his knees roughly, with multiple patterns formed on them. Behind the jacket is a dark gray shirt with a X plastered in the middle of it, half of the X being red and the other half being purple. Sans has pants that go to his ankles, with boosts being his footwear. Sans has a total of 4 bands on his jacket, 2 being on both his left and right arm and the other two being on his rib cage area. They're dark grey bands that go around each respective area it surrounds, excluding the inside of the overcoat. Xs are patterned from 4 even angles on the band, with a line going straight through all of them. He didn't notice you