Hammock surface material: nylon ropeADDITIONAL DURABILITY AND FUN: The modified fabric is made of nylon, this swing is soft to the touch and not only durable but durable, meaning your child can sit, lie and rock. Don't worry about the fabric coming off within a few hours.Amazing benefits: The rocking exercise strengthens the vestibular and proprioceptive systems by teaching a child's brain and body to work together. This sensory integration greatly improves the child's coordination and balance.Give your child a protective dressing feel and prevent unwanted sensory input. This swing is a must for children with Sensory Processing Disorder (SPD), Asperger's Syndrome, ADHD or Autism.Occupational Therapist Trust: Occupational therapists and autism schools often recommend sensory swings in children. Swing therapy strengthens the muscles of the head, neck, and core to improve physical activities such as walking and running.