Im 6' 170 with an athletic build, not skinny not chubby, i normally where a medium but it seems that this jacket runs a tad small, can anyone make a suggestion as to whether to go medium or large?

Thanks!

Tech Specs:

Material:

[Shell] 15D Nylon taffeta 

Insulation:

[Body] 750-Fill down; [Underarm panels] 100g Cirrus synthetic insulation 

Fit:

3-D Ergonomic construction 

Hood:

No 

Pockets:

2 Hand, 1 chest 

Core Venting:

No 

Weight:

0.9lbs (408g) 

Recommended Use:

Layering, cold weather wear 

Manufacturer Warranty:

Lifetime