Not sure what you have against ziplock bags, I would say that a good 70% of all clothing items that I consider adequately packaged are in them. the rest have some sort of waterproof layer between the outer packaging and the garment. Even if you use satchels you really need an inner, waterproof layer as theyb often arrive with a tear or hole in them. I will mark any seller down who does not send with inner protection.

100% of clothing items I sell are sent in ziplock bags (or another, well sealed with sellotape bag if I don't have a ziplock big enough), in all the many years I have been selling I have never had a single complaint about how my clothing is packaged.