I initially gave this product a 4 star review because it was not heatproof, but fit well and was reasonably waterproof.
However after owning it for 2 months I am having to downgrade this to 1 star.
The cover appeared to have a reasonably secure strap underneath but in moderate winds, this broke off. This caused the cover to ride up, rip at the back and act as a sail that dragged the bike over, causing it to crash onto its right side.
I had a crash bar installed so the damage was limited to a broken rear brake pedal, footrest and scratches but this was still expensive and time consuming to fix. If this cover was made of quality materials then it would never have ripped or broken so easily.
It is worth spending much more than an extra £30 to get a quality cover that protects your bike and doesn't end up damaging it and costing much more money in the long term.