Aeris Swoppster Bedienungsanleitung Seite 13

Settings
Spring tension
The level of vertical movement can be regulated
depending on the child's weight and urge to move.
The child should be able to move without needing
to "sit up".
If the child is light or wants to move more,
simply turn the cuff on the spring strut to the left
(in the direction of low weight) and accordingly
to the right for reduced movement capabilities or
for a heavier child.