1. The suction is below (ie on the beach are sucked grains of sand, entering the tube)
2. If no suitable connection after shortening the tip she always slips out, very annoying
3. processing generally not high (rather cheap rather than cheap)
Also have Kitepumpen compared with this I got hardly breathe into it, with the other it ran smoothly.
For air mattresses, inflatable boats, .... certainly a good, sufficient product
