The pulls a long the bones

Video on Amazon.com Watch This mat saves the transition to the gym - who loves pullups, wants to do something good and his back would be ever want meters pulled on the beach, will come with this mat at his own expense. Very powerful pull, but still easy to control, tearing this super kite on the arms like you're sticking to a anfahrenden bus.
In stronger winds (about 5 - 6 bft / 20 - 25 kN) is out of this so inconspicuous piece of plastic an express air mattress which abfordert full concentration and fast reactions. Apart from a bit of skill and a little strength / muscular endurance should be available.
But even with smaller wind speeds (2-4 Bft) makes this flap fun and fancy stronger wind. Especially for beginners are 2 - 3 Bft perfectly adequate to make an impression to gain from the tensile forces - about 3 Bft should better not be underestimated, since the mat is a fast gain respect.
In addition, the mat is pretty durable and forgiving even violent crashes without damage. The lines are up about 6 Bft adequately dimensioned (clear, there are better and more) and multiple loops are not a problem.
Warning, this mat is not a toy!

Pro Contra:

+ Very high fun factor (if high tensile forces and speed are required)
+ Good and robust workmanship
+ Can be space-saving folded and packed
+ Suitable in light winds for beginners
+ For two to three people suitable, because you can alternate in strong wind

- Quite difficult to end up with stronger wind (2nd person helpful)

Conclusion: strong buy recommendation