What do you mean by fully waterproof?
When we describe a garment as fully waterproof, we refer to the combination of its design, outer fabric and taped or welded seams. The garment is designed to keep rain and snow from getting through.
Seams are critical points for waterproofness, which is why they are taped or welded on waterproof garments.
For the waterproof rating and construction of a particular garment, check its product description and technical information.
