Line sets of 10m, 20m and 30m lines are available. The wings are delivered with their 2m bridle and the control bars with 3m lines. Therefore you need lines, generally between 10m and 50m.
To know what length you need depending on your sport and wing size, go to the Line Length board.

Made of high quality 200 kg Dyneema, they are manufactured to offer very high tensile strength: they're pre-stretched & covers are added to the ends (green on the right side and red on the left one) then sewn.
They are ready to fly and you don't even need to know how to make a knot to use them.

The size you need also depends on the sport : we advise 10m for kayaks and boats, 20m for Flysurfing with a 5sqm wing and 30m with an 8.5sqm one. Use 30m to 80m for bodydraging spare.