I have bought a brand new pair of shoes from caterpillar, but one of the shoes has been badly made. The upper leather side has been badly sewn to the sole at a part, so after some time the seams started to leave the sole at that part so as there is a growing hole between the upper leather side and the sole of the shoe. What I would like to do now is to stick it back by means of the appropriate glue type. But I don't know anything about glues and shoe mending. If someone knows the name I could buy it in a specific shop for glues around.
thanks