Critically Taped - On outerwear with critically taped seams you only have taping at the key points where potential leakage can occur. This is acceptable, or even advantageous if you live in a dry climate, if you're more concerned with breathability than dealing with wet weather then outerwear featuring critically taped seams is the way to go.
Synthetic insulation is measured in grams, so a jacket with a 80g rating simply means that a 1 meter by 1 meter piece of that particular jacket's insulation weighs 80 grams. The higher the rating, the warmer the outerwear.
Hem Lift Up System - Helps protect your cuffs from parking lots.