Frogg Toggs Ultra-Lite suits are constructed from an ultra-lightweight, waterproof, breathable, nonwoven polypropylene material. The patented bilaminate technology with "welded" waterproof seams and unmatched sweat-free breathability is a great value in affordable rain wear. Non-woven Waterproof Breathable Welded Waterproof Seams Compression packability for easy storage