• That's a really technical question that's best addressed by an expert. Maybe a call to the manufacturer would provide you with the specifics you seek as there are no experiments that I performed to determine the information let alone provide an accurate measure of waterproofness on a comparative basis.

    Call them and ask to talk to somebody in the lab.
    Answered on 1/3/2016 10:50:07 AM by Average American Apparel Shopper from The United States of America
  • This jacket has a rubber type coating. Wiping it down seems the best way to clean it. Until that coating cracks, it will remain waterproof.
    Answered on 1/3/2016 3:21:19 PM by Beth Rodda from Napa Valley
  • I washed it in the machine and I've wiped it off with a wash cloth. It does not need to be treated.
    Answered on 1/3/2016 5:14:37 PM by klem from Northern California
  • That I do not know!
    Answered on 1/3/2016 7:55:25 PM by Girl that golfs from Michigan
  • i wash all my waterproof garments in cold water. i then hang-dry them, air only. as for applying anything, you could probably wash it using "Tech Wash" by Nikwax to help preserve the waterproofness buy honestly i haven't washed mine yet. and i probably won't unless it gets muddy or something. this jacket is at the lower end of the waterproofness ratings and a price that reflects that. it does stop rain but i don't think i'd want to stand out in a storm for an hour. this isn't a $300 rain jacket that you need to pamper. it's good for sticking in the car trunk in case of unexpected rain.
    Answered on 1/3/2016 11:11:12 PM by steve u. from san francisco
  • The jacket is still fairly new, based on what I see from the material. I will likely just wash it with a wet rag or sponge. The test will likely be this spring or summer before I can truly try it on the hikes I intended. The labels do state it can be machine washed delicate in cold water and to hang dry only. If it gets really muddy or smelly, I will likely follow those instructions.
    Answered on 1/4/2016 5:43:09 PM by Hopeless Hiker from San Diego
  • You can wash it in washing machine. Not sure if you need anything to keep it's waterproof rating. I just washed my jacket yesterday in washing machine in cold water and it was just fine.
    Answered on 1/4/2016 6:45:00 PM by Anonymous from Hawaii
  • Sorry for the delay. We bought these for our trip to the Galapagos Islands and just returned. The jacket comes with a stuff sack with the dimensions of 6.5" H x 12 " circumference. We used our jackets a lot on the ocean waters and land and they are a bargain for the price!
    Answered on 1/6/2016 4:15:10 PM by Scooter Girl from Montana