I had a friend ask me to build this for her daughter. The bars are bungie cord that you can order by the roll. I made 3 frames the same size then put 2x2's on the inside corners and counter sunk the screws the stapled the bungie cord at the top and the bottom. I would highly recommend securing this to a stud in the wall incase a little one tried to climb on it.
Estimated Time Investment
An Hour or Two (0-2 Hours)
Recommended Skill Level
Beginner