A cute rider backpack. It sits well on the back and shoulders, and the length can be easily adjusted. It also has adjustable straps on the chest and waist to help with high speeds and keep it stable. It comes with a waterproof "hood" and an external net for carrying a helmet.

The size is small! The main compartment has a small divider (maybe it can fit a small laptop or a tablet) and an even smaller internal pocket (for documents/cards). The front pocket is particularly small in capacity. It has a small mesh pocket and the rest of the space can fit very few items. For everyday use (home-work-stroll), it's fine, but only up to that point. If you load it with things, it loses its shape and doesn't sit well on the back, becoming annoying.

In terms of quality, it doesn't say much and I don't know how long it will last. I will edit in a few months when the wear and tear becomes apparent.

Edit: One of the back straps tore. The bag is not meant for heavy loads.