Andy ... I got this stuff with my simms gortex waders .. They didn't leak but I was feeling damp .. 5 oz. size did them .. feel brand new again .. follow directions .. wich includes ,, machine wash ,, hang and spray wet garment ,, tumble dry medium heat 60 minutes ... do not air dry !!! .. worked pissaa for me ..
http://www.rmconnection.com/ReviveX.htm