From a post by Naz:
The PS720 model is suited for those who are over the limit for the PS640 model, however would give someone over 95kg and under 125kg the best performance.
PS640 Recommended bodyweight Maximum jumping height
standard use: 95-115 kg 1,40 m - 1,10 m
Extreme use: 70 - 95 kg 1,90 m - 1,40 m
PS580 Recommended bodyweight Maximum jumping height
Standard use: 85-105 kg 1,40 m - 1,10 m
Extreme use: 60 - 85 kg 2,00 m - 1,40 m
PS520 Recommended bodyweight Maximum jumping height
Standard use: 75-95 kg 1,40 m - 1,10 m
Extreme use: 50 - 75 kg 2,00 m - 1,40 m
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They are the highest weight available and would probably be unsuitable for you at this stage.