Folding drops the height from 36" to 21" so the slide can go behind a sofa or under a bed between sessions, which is the difference between a toy that stays out and one that gets put away. The 58" slideway is divided into acceleration, deceleration and buffer zones, and an 8.5" basketball hoop at 26" adds shooting to sliding, climbing and crawling. BPA-free HDPE meets ASTM requirements and carries 110 lbs. Unfolded 68" x 27" x 36"; net weight 19.5 lbs.