I have the raincover ordered in order to protect my 70-300mm lens to could. But the rain cover is even slightly too large, but still fits. For smaller lenses the size could lead to problems.
Reason for the 2 star:
Here in the pictures and on the product label see two Velcro straps that are outside to protect the lens. In my raincover this is not the case. There only a Velcro exists and is still inside. Since the velcro is not complete. inside is laid out, but only a short range, it was not possible to safely protect my lens, as a wrinkle forms, where the rain can penetrate unhindered.
An illustrated manual is also absent.
For the price you get nothing else, I'll think an idea of the problem.