Hape Roller Derby $49.99 Default Title - $49.99 Quantity This product is currently sold out. Please fill in the form below if you'd like to be notified when it becomes available! Colourful wooden balls, peek-a-boo holes and fast tracks create a 2-sided mountain of fun. Talk about concepts fast/slow and in/out as you watch the balls zoom down the board. Recommended for children ages 12 months+.