For kids ages 3 years and older Includes 8 track pieces, 14 links, 2 left hand curves, 2 right hand curves & 1 four-way intersection Reconfigure the pieces to design all sorts of cool new layouts Add these track layouts to the expand their Wonder Builders destinations (Each sold separately and subject to availability) Collect additional Wonder Builders building sets, track packs, & vehicles (Each sold separately and subject to availability) Imagine all the places they'll go with this Wonder Builders Build it Out! Track Pack. Preschoolers can mix and match the 25+ reconfigurable play pieces to design all sorts of unique track layouts and expand their Wonder Builders world. With so many combinations to explore; there's no wrong way to play! Where development comes into play -- Creativity & Imagination: Kids can let their imaginations run wild as they use creative thinking to design cool new track layouts. Engineering & Building: As preschoolers build out their designs; mixing and matching the play pieces to create different configurations; they'll practice their designing and building skills!