I created the heavens rod chosen because it was cheap and to be secured to two points with clamps. It fits perfectly on Ikea cots and although the beds are rounded at the top, the bar holds. The rod is made of metal and consists of three parts: one puts the two rod parts first together and then inserted the oval sky attachment on top. Attached is the full bar with 2 adjustable clamps (which are also on broader edges) which are tightened at the top and bottom edges. I would recommend the bar, angrily this purchase was only the long delivery time of baby Direct 15 days although goods was indicated as in stock and shipping within 2-3 business days, and I got to demand a misinformation.