just go to Wal-Mart and get a can or two of Scotch Guard... i use it on rain suits, duffle bags, gloves, hats, shoes... great stuff !
https://www.scotchgard.com/3M/en_US/scotchgard/products/all-products/~/Scotchgard-Outdoor-Water-Shield/?N=4340+3293253038+3294529207&rt=rud