The therapeutic hammock is made out of two different materials. The inside is lined with pleasantly textured fabric also used in other SI products, e.g. the therapeutic swing.

It is used for developing bilateral motor co-ordination, balance reflexes, visuomotor
co-ordination, tonic (especially labyrinthine) reflex integration, improving
postural (flexor and extensor) muscle tone and general stimulation of the
nervous system through strong activation of the vestibular and proprioceptive
system receptors.