3 years & up. Build a life-size fort that glows in the dark and hide out inside until it gets dark. This EZ-Fort set is easy to connect and perfectly sized for little hands. Super glow in the dark connector balls allow for playing and building fun to go on into the night. Promotes imaginative play and helps develop fine motor skills. Compatible with all other EZ-Fort sets. Includes 20 Glow in the dark connecting spheres, 34 Tubes, and a Handy storage box.