how is this jacket at -10 with -20 wind chill?

Tech Specs:

Material:

[Shell] WindStopper; [Lining] taffeta 

Insulation:

133g PrimaLoft 

Waterproof Rating:

25psi 

Breathable Rating:

625-675g / m2 

Core Venting:

Underarm zips 

Pockets:

2 Front, 1 wrist with goggle cloth, 1 internal media, 1 internal goggle 

Powder Skirt:

Yes 

Wrist Gaiters:

No 

Hood:

Yes 

Zip-in Compatibility:

No 

Recommended Use:

Skiing