What's With The 'Kirkified' Charlie Kirk Face Swap Memes? The Thermashield T1. Lightweight warmth for anywhere you wander, designed to keep you comfortably dry through storms and snowfall. Take on the cold with lightweight, packable Italian thin down insulation that traps heat so you stay warm. Water repellent shell and taped seams provide extensive all weather protection by deflecting rain, snow and wind. Complete with classic Tilley features including our signature hidden pocket and adjustable bungee drawstring for the perfect fit.