Spada Suction Tank Bag - 3 Litres

Don't waste your money on this bag.
The suction cups were crap and the bag flew of the bike at 55mph. The bag itself is made to a good standard but then they put flat suckers on to grip the tank ? The bag come with a rain cover and a carrying strap, after complaining to sbs about the product I was told " did I use the strap to connect around the headstock?" , No i didn't as its a carrying strap and it has no securing fixtures to suggest otherwise. The clear pocket on top for phones etc. was all covered in fine scratches which was almost opaque , really disappointed with this product and sbs reply ! The bag flew off and was lost, I did however recover the bag a couple of days later by walking along a busy roadside embankment, luckily my phone and other contents were in good order and working.
Would I recommend this bag ?
Not if it was the last tank bag on Earth