Should I buy for my current weight if I am still growing? Can I still do tricks if I go one size up?

You should get the one for your weight limit. You should be able to do tricks because the medium and large have heavier rated springs.

Are Air-Trekker jumping stilts dangerous? 
Anything can be dangerous if used improperly. Air-Trekkers are not toys, take them seriously! So long as you're careful and don't get too cocky, they aren't any more dangerous than a bike or skateboard. - Kieran (customer)

How easy is it to get started?
It's very easy! All packages come with a Starting Guide for anyone new learners. We also provide video tutorials.

What is the Air-Trekker Warranty?
One year warranty, against defective parts, with the exception of the foot pads. Read more