race features:
Steady Feet: You have Advantage on Checks and Saving Throws to prevent you from falling from heights.
Thick Hairy Skin: You have Resistance to Cold Damage & Advantage on Checks and Saving Throws against cold weather.
Heavy Sleeper: You only need 4 hours of sleep but you start at Wisdom (Perception) 15 DC to wake up if there is noise.
"Living amidst the high mountain peaks in the north, Tasne Dwarves have adapted well to the windy cold common to such regions. Surprisingly steady on their feet, they don't have trouble traveling the most treacherous of mountain paths. Tasne are also excessively hairy. Bordering the level of full on fur. But it does them well to shrug off cold weather."