How warm is this jacket? I feel the cold really bad and need something well insulated while I'm in NZ.

Tech Specs:

Material:

V-Science 

Insulation:

polyfill (60g) 

Fabric Waterproof Rating:

10,000 mm 

Fabric Breathability Rating:

10,000 g/m² 

Hood:

yes, fixed 

Venting:

mesh-lined underarm zips 

Powder Skirt:

yes, stowable 

Pockets:

(external) 2 tricot-lined handwarmer, (internal) 1 goggle, 1 audio 

Seams:

critical seams taped 

Wrist Gaiters:

no 

Liner-Compatible:

no 

RECCO:

no 

Recommended Use:

snowboarding 

Manufacturer Warranty:

30 days