Sealtex Ultra is a highly breathable, high technology, PU coated fabric on a flexible 100% Polyester tricot knit, waterproof, windproof and breathable, this fabric will keep you warm and dry in adverse weather conditions. Welded, waterproof seams keep rain and wind out and the durable, anti-fungal, anti-tear, stretchy fabric can easily be wiped clean, allowing the garments to look good and last for longer.