I stand by my statement that for a survival situation fleece blankets do not match the level of wool blankets.

I took the question to be regarding stock options for wool blankets verse fleece blankets and windbreaker fleece blankets are not a stock option there a designer. The focus is on blankets and not jackets or other clothing options where fleece has been combined with other technology to create wonderful products.

The vast majority of fleece blankets are flimsy constructs, that while warm in a house or low wind conditions are wasted upon a stiff breeze. Wool can be itchy, smelly and heavy, however it will keep you warmer and more protected than fleece. Wool blankets are also generally larger than fleece blankets that barely cover the toes when thrown over you.