The patterns and width of the Wavy Tactile Path are designed to offer the most suitable tactile sensory intensity for children as well as a realistic "nature" experience. The boards can be arranged into curvy or linear patterns. There is no directional uncertainty; the change in angle is natural for humans. The slight slopes on the 4 sides of the boards offer balance control for front and back and also left and right. The Wavy Tactile Paths help enhance muscle development and provide tactile stimulation. They improve vestibular balance, movement coordination and the sense of balance. They help children cultivate spatial concepts and planning through arranging and constructing the Wavy Tactile Path pieces. The set includes 8 pieces that nest conveniently nest together in a handy carry bag. The maximum length of each board is 26.85", the maximum height is 4.28" and the width is 6.82". Ages: 3 years & up.