Needs review
Source: Frostburn

Description: Your training and natural hardiness have improved your natural resistance to cold temperatures.

Prerequisites: Base Fort Save +6, Cold Endurance

You gain resistance to cold 5. If you already have resistance to cold, it increases by 5 (maximum resistance to cold 15)

Special

You can gain this feat multiple times, its effects stack. You cannot have more than resistance to cold 15 as a result of taking this feat.