This bag has some water resistance but is not waterproof.
Do you recommend anything that could do the job. It's for my husband he works oil field they leave their bags in back of trucks coming and going locations. Needs something that will keep his stuff dry if it starts to pour rain. Also noticed this item was a small needs something that could fit a couple of days worth of clothes and accessories.
The Marmot bag is not waterproof. I'd recommend a waterproof dry duffle bag for your husband. For wet conditions like that, II use a few dry bag options, including this one from Seattle Sports http://www.sierratradingpost.com/seattle-sports-roll-top-waterproof-duffel-dry-bag-large~p~2580g/?filterString=s~dry-duffel%2F