The MEDIUM Pikler Triple Climber Triangle features 2 sides with climbing dowels and is collapsible for easy storing. Crafted using responsibly-sourced birch plywood and beech wood, it's a wonderful sustainable option for mobile little ones exploring their adventurous side. Through physical developmental play with the Pikler system, children gain muscular and cardiovascular strength, build self-esteem, improve gross motor skills and explore their imagination simultaneously.