You have a climbing speed equal to your walking speed and have advantage on checks related to climbing or jumping.

Having grown up around creatures much larger than you, you are much better at fighting them. You can climb on a creature larger than you as easily as you could climb on a regular wall as long as you are using two hands. If you are using one hand it is treated as difficult terrain. While climbing on a creature it can attempt to shake you off and the dm will decide the rolls that must be made. Any attacks you make against the creature while climbing on it have advantage, and the creature has disadvantage on attack rolls against you.

Your Strength score increases by 2, and your Constitution score increases by 1.

Half Trolls have lifespans comparable to humans but they mature later and live 40 years longer on average. They enter adulthood in their late teens and usually live a little over a century

Half trolls are a little taller than humans but much heavier. They typically are between 5'8 and 7'2. Weight is typically between 215 and 320 pounds

Your base walking speed is 30 feet.

You have proficiency in the Athletics skill. You can also make a running long or high jump from 5 feet rather than 10.

You can focus yourself to occasionally shrug off injury. When you take damage, you can use your reaction to roll a d12. Add your Constitution modifier to the number rolled and reduce the damage by that total. After you use this trait, you can’t use it again until you finish a short or long rest.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

You have resistance to cold damage. You’re also acclimated to caves.

You can speak, read, and write Common and Giant.