Children will enjoy exploring the Bird's Nest Mini Tree House Climber. Made from six-strand steel core rope that's durable and safe for children. Netting is only available in black and center post color is subject to change. This playground climber is designed for children 2-5 years old and has a fall height of 4ft. It has a use zone of 21Ã¢ÂÂ x 21Ã¢ÂÂ.