I need to replace my 1 year old radwagon conestoga rain cover. Wondering if there is anything out there that is higher quality than the official rad power bikes version?

I found the rad branded cover to be terrible quality especially for the price. The problem is the zippers, which are very thin (thin teeth and thin mechanism). The cover requires a lot of tension, and with poor quality zippers, mine popped and buckled and jammed the first week I had my cover. Within a month, two wouldn't zip anymore, and now I am down to one functioning zipper.

It really needs to be a rain cover that provides a little more slack and/or has thicker zippers, like what you'd find in a German hiking backpack instead of a $10 kids Minecraft backpack.