Sleep Sac is a crafting material in Monster Hunter World available only on Low-Rank (1-5 Stars). It is used to craft certain upgrades for sleep-weapons.
Sleep Sac is a reward for slaying or capturing a Radobaan in Rotten Vale. It can be obtained on Low-Rank (1-5 Stars). It will show up in the mission reward screen after the monster has been defeated. However, it’s not a guaranteed drop! You may have to farm this monster multiple times to get it. There’s no way to carve this item, it’s simply a random drop in the reward screen after the monster has been defeated.
- Radobaan (Habitat: Rotten Vale) – Random Reward from this monster on Low-Rank Difficulty (1-5 Stars)
Used to Craft:
- Sleep-based weapon upgrades
You can defeat this monster as often as you wish to farm Sleep Sac, it respawns when fast traveling to another map.
For all other crafting materials, check out our Monster Hunter World Wiki.