Brave: You have advantage on saving throws against being frightened.
Mountain Born: You have resistance to cold damage. You also naturally acclimate to high altitudes, even if you've never been to one. This includes elevations above 20,000 feet.
Skillful: You gain proficiency in one skill of your choice.
Versatile: You gain the Skilled Feat or another 1st-level Feat of your choice.
Essentially look like humans with proportionate dwarfism. All the parts of the body are smaller to the same degree and appear to be proportioned like an average statured human. Hauflins have a wider range of hair and eye colors than other humans like purple, blue, green, violet, pink, silver, white, etc.