Protomastyx hide

Protomastyx hide is a Tier 1 Dungeoneering hide used to make Protoleather equipment by using a needle on it while having thread in your inventory. Players can obtain the hide either by hunting or killing a Protomastyx or buying it from the Smuggler. Trapping is the more efficient method to gain hides instead of outright killing as more hides can be obtained while killing it may actually result in no hides.

The hide is the tertiary ingredient in crafting Cub hoardstalker pouches.

Players can make the respective Protoleather armour with the requisite Crafting level:

No tanning is required before these can be made into armour.

Reference

 * RuneScape Knowledge Base: Dungeoneering - Crafting Tables