mulceber
Moderator
Agreed, I find shearling only becomes much significantly warmer than an A-2 jacket if you really "seal" it up - if the jacket's unzipped and the wrist snaps (B-6) or wrist zips (Irvin) are undone, you can wear it up to surprisingly high temperatures.Thank you Pa12
I'm a "cold guy" and I wear the B-6 up to 15°C with no problem. So I'm sure I would find many opportunities to wear an Irvin.