Three years ago i bought a Swazi micro shirt and a prohunter shirt. I'm very impresst wiht both bits of kit. A lot of our hunting is standing around dog hunting like yesterday it was -7 and with the Swazi on and a Gore tex coat i was perfectly warm. I was out at first light this morning -14 laying a tracking trail for the dog. This time i had on the Swazi shirts and my old Helly Hansen field jacket. still nice and warm. After 3 seasons wear the only small thing i have found is that the cuffs are a bit tight around the wrists. But i do have big wrists.