The Ursine Witcher Gear Set can be found in Skellige (Scavenger Hunt: Bear School Gear). It consists of 7 pieces - 5 armor pieces, 2 swords and 1 crossbow.

Simply collect any of the pieces to start the treasure hunt (you don't need to accept a quest anywhere, just go to any of the shown locations and pick up the diagram). This is a heavy armor witcher set.

Recommended Character Level to wear this Armor: 17

Ursine Silver Sword

South of an Ancient Crypt in Skellige is a set of ruins guarded by level 13 Gargoyles.

Defeat them and head through the right-most door. A skeleton just inside will hold the diagram for the silver sword.

Ursine Steel Sword

Southeast of the town Fyresdal is a ruined Inn along the coast with some enemies around level 20.

Head to the collapsed building up the stairs and go down inside. Hook around and go into the room to find the chest containing the Steel Sword diagram.

Basic Ursine Crossbow

Head to the bottom cost of the North West island in Skellige (South of Old Watchtower), here is a cave with some level 15 Drowners inside.

Go inside and hug right to climb up some ledges. There's a gap between two landings that you can jump across and avoid fighting most of the enemies.

Here you can find a skeleton which holds the diagram for the Ursine Crossbow.

Ursine Witcher Armor

Between the signposts for Yngvar's Fang and Trail to Yngvar's fang in Skellige is a building in ruins.

Head in and down the staircase towards the far wall and use the switch. Level 7 Wraiths may appear throughout the area.

Turn around and go through the now open first door on your left and drop down into the under section. Head straight and then turn right up the stairs and climb the rubble to the top.

This should enter into a large room, head straight past the chair to the chest which contains the full set of basic ursine Witcher Armor.