HYDRO PRO is Montbell's own water resistant fabric with high water-resistant polyurethane resin coating. Seam sealing treatment is processed onto all seams with the same material to improve their water resistance and peel strength. Water pressure resistance is sufficient to 10,000 mm, including its seams. Soft texture and water resistance are not damaged because its material does not change under -30°. It is mainly used for waterproof bags.