Yak hide armour is a type of members only armour in RuneScape. The armour is primarily designed to be worn by warriors. To obtain yak hide armour, one can either make some using the Crafting skill or trade with another player. It requires 20 Defence to wear.
The raw materials are dropped by Yaks on The Fremennik Isles. Once a yak hide has been obtained the player can take it to Thakkrad Sigmundson, who will tan the hides for a price.
Yak-hide armour counts as warm clothing for the Wintertodt.