They are special ROPES for gymnastic games and psychomotor exercises. Manufactured in bright colors and with special fibers to avoid damage to the body and achieve maximum duration in perfect condition.
The packages vary depending on the length of the ropes. But the thickness is the same:
The 5 m ones go on a 5 rope boat, which is equivalent to 25 m. of rope
Those of 2 m go in a boat of 10 ropes which is equivalent to 20 m.