Tracker's trousers are medium armor trousers in The Witcher 3: Wild Hunt that come in two forms:
Tracker's trousers (crafted)[]
Crafting Requirements 
Min. Required Level: Amateur armorer
Tracker's trousers (basic)[]
They can be found as random loot or purchased from the following merchants:
- All base game armorers except Zoltan Chivay
- Armors merchant in Nilfgaardian Army Group 'Center' Camp
- Merchant in the boatyard south of Refugees' Camp
- Merchant at Coast of Wrecks
- Merchant in Ursten
- Merchant at the sawmill northeast of Rannvaig
- Quartermaster Eggebracht in Nilfgaardian Army Group 'Center' Camp
- Merchant in Mohrin Village
Additionally, they can be obtained as a reward during multiple quests:
- In the treasure chest for A Costly Mistake
- In the treasure chest for The Things Men Do For Coin...
- For agreeing with Vernossiel during Contract: Woodland Beast
- For killing Nathaniel Pastodi during Carnal Sins
- As part of the payment for Contract: The Griffin from the Highlands