I used a product very similar to this to fix a very very tiny rip in the trousers of my OH suit. The label read that it would be invisible, invisible only if you were blind, completely ruined the trousers. Also uesed to turn up the hem of a pair of my trousers, again the glue seeped through the material (heavy cotton), dried hard and left a white stain. Recommend using good old needle and thread. Not had much success with 'wonderweb' either.