The Maximum Series Long Bones Bridge is a unique shape that is fun and challenging for children to cross. Rather than simply walking across, like they would with a traditional flat-bottomed bridge, children will have to crawl across the slanted plastic pieces in order to get across this obstacle. This makes it a more fun and challenging obstacle, and children will take time to stop and look between the spaces for furtive glances of the surrounding area. At each end of the bridge, there are vertical metal hand-grips which children can hold onto as they pull themselves back up to their feet. Despite being separate pieces, metal bars which run through each of the plastic pieces holds them firmly in place so that they do not shake or wobble while being crossed. The plastic pieces can be ordered in any pair of colors that you specify.