Fantastic product, saved me chucking a good pair of boots.
I had previously bought a pair of waterproof walking boots from a "reputable" on line source, no names mentioned but it rhymes with space invaders, which were waterproof all right until the sole started separating from the upper at the front/toe area after one winter's wear. I had lost the guarantee by that time and was stupid enough to just think I had got a rogue pair. So I chucked them and bought a similar pair from same source at another £35 - £40 and , after one winter's wear, exactly the same thing happened.
I thought this is getting beyond a joke; 35 quid a pop and only lasting one winter, and the boots were a very good fit, very comfortable and still in good condition otherwise, so I looked around for some means of repair and came across this.
I just squirted some goo liberally between the separating sole and upper, clamped it between two bits of wood using a G-Clamp and left it over night. The result, a weld between the sole and upper again that you just could not pull apart and was entirely waterproof.
So overall I am very satisfied with this product; it does what it says and has saved me 35 quid or more for under a tenner and I have got plenty left for other repairs. Thoroughly recommended.