This Pikler Triangle Climber is an excellent training device for young children to develop balance control, physical ability, courage, and more. Through physical activity, it is beneficial to the physical growth of children in the future. It's suitable for toddlers and children from 6 months to 4 years old. The 3 in 1 Montessori climbing toys come with a triangle pickler, arch, and a two-sided ramp, one side for climbing and the other side for sliding. The 2 in 1 climbing toys do not include the arch. With a freely adjustable angle, the ramp provides children with different ways and difficulties of play. Give kids even more opportunities to have fun. All parts of the climbing toys are smoothly sanded for a smooth, burr-free finish. It will not sting the skin. The triangle structure is stable and safe. This climbing toy uses high-quality panel materials and metal parts. The panel of the Climbing Toys is certified by CARB Phase 2 compliant with formaldehyde emission below 0.09 ppm. This climbing toy is foldable, and the foldable design makes it easy to put it in any corner of your home. It's also very simple to install. Usually can be assembled within 40 minutes.