Kelly's Cork Renew, 71ml Seals and Waterproofs cork Surfaces - 2.4 Oz

I had previously used ordinary PVA glue to protect the cork on my Birkenstock sandals. However, this wasn't entirely suitable and tended to be very thick and would crack. When opening this product I was disappointed, it seemed exactly like PVA glue. However, it is a far superior substance and restores the soft shiny protective finish to the cork edges of my sandal soles, while also softening and rejuvenating the cork.