Ronza's Satchel
From MHWiki
These satchels are prepared by Ronza as supply packages for MouseHunters. The contents of this satchel range wildly. For the most part they contain a few pieces of cheese to help you in your hunting endeavours. Occasionally, they contain something a little more special.
Ronza's Blue Satchel of Surprise, Ronza's Green Satchel of Surprise and Ronza's Red Satchel of Surprise are dropped by Rockstar mice. The satchels are placed in the "Misc" tab in a hunter's inventory. Contents of the satchels vary greatly; while the exact range of contents is still under investigation, known loot includes various types of cheese as well as other loot.