All Vans are constructed through a unique vulcanization process where shoe components are welded together using heat. As a result, rubber foxing is vulcanized to the rubber sole of the shoe and melt-welded to the canvas uppers.
With extended use, the sole of your Vans may split away from the canvas uppers. Simply re-glue the areas that have pulled away. We recommend using some contact cement adhesive for a durable and long-lasting solution. If you're in a bind, then a shoe repair glue or something similar is an excellent stopgap.