Dennis Hack from Eurotramp, used in Beijing at the Olympic Games 2008, claims:
“Our tramponline “Premium 4 x 4” is, at the moment the most high-performance certified competition trampoline in the world!
… In the past, the bands were 6 and 4 mm wide; today they are 4 x 4 mm wide, which displays clearly less air resistance.
read details on GYMmedia – Trampoline Know-how: ‘4 x 4 is not for anyone with weak nerves!’
Now that “Flight time” (total time of the 10 skills) has been added as a judging criteria, trampolinists will want the hottest bed possible.
But will this make trampoline competition more dangerous?
Gymnastics Coaching.com 