Frostweave Bag

This is the third-largest craftable all-purpose bag, the first being, and the second being and.

Source
This item is crafted by Tailors and requires a skill of 410. The recipe's difficulty color turns yellow at 430, green at 440 and gray at 450.

Each requires two  and two, thus the raw materials required are as follows:

The pattern is taught by Grand Master Tailoring trainers.