When people look at buying projumps they are giving the various models depending on weight. Many get confused by this and are not sure if they should weigh themselves with clothes and shoes on etc.
My advice is to take your approx weight with your normal clothes and shoes on (basically whatever you would be wearing while on your projumps).
Once you have your weight you need to use a little common sense.
If you weigh 65 kilos (just over 10 stone) then do not assume the 60 kilo model will be ok for you. It's just my view, but always go for at least the next model up from your weight.
As an example, if I was 56 kilos (just under 9 stone) I would NOT get the 60 kg model. I would get the 70kg model. Reason being, many people buying projumps are youngsters who are still growing and could easily go over the 60kg limit soon.
Also there are some people on the forum who have been under the weight limit and still had problems with the projumps 'bottoming out'. This is when the person is at the maximum weight the springs can take and when you jump on them the springs bend so much that your feet hit the floor. This can be painful and takes a lot of the spring momentum out of the bounce.
But doesn't getting the next model up effect my jumping height?
It will at first. Effectively you will have tighter springs but you have to think about how long you want to be using your projumps. As time goes on your springs will loosen a little and your skill level and confidence will increase. You also have to remember that most people are not able to jump 4 feet in the air when they go on projumps for the first time. It can take many weeks or months, unless you are a gymnast etc.
Again, this is just my personal view and if anyone disagrees I'm sure they'll post a reply. If you are in any doubt then I would recommend giving the projump shop a call to discuss which weight/model is best for you.