Trousers (Superior): Cave Of The Trials Of The Grasses

Start your next expedition from Kaer Morhen (signpost) itself, climbing the mountainous trail to the northwest until you reach the small cave entrance where you trained during your youth at the time of the Trials of the Grasses. Expect a sizable flock of Harpies along the way.

Head inside, and prepare to clear the tunnel of Nekkers and Rotfiends. Once the place is only holding bad memories and skeletons to loot, look for the low stone wall on the southern wall, relatively near the far end of the tunnel. A small chest is hidden behind the stalagmites here. Smash them to claim your fancy pants.