The Bas Cover consists of 2 separate parts (basic set). The Bas Cover is made in such a way that you can connect multiple parts together. That way you can make the Bas Cover as long as necessary. You can connect them together with Velcro.
Attach the Velcro to the protruding flap. When the desired length has been reached, the remaining flap of the other part should simply be folded in.
Tip for attaching the Velcro:
Stick the 4 hooks and 4 loops of Velcro together on the top of the flap. Then press it firmly against the inside of the other piece of cardboard. Then, when using for the first time, carefully separate the cardboard parts. This ensures that the Velcro is in the right place and that the cardboard is not pulled off. Make sure you spread the Velcro evenly over the strip.