Why choose our 3 pieces bed rails for toddlers? Our baby bed fence is foldable and Height adjustable. It is perfect fit for queen or king size bed mattress. Each side can be folded, and when you open the box, take it out and simply unfold it to install it successfully. Our side fence has 25 adjustable heights suitable for 2''-11.8'' Thick Mattresses. In addition, there is an unilateral lifting system, which will provide convenience for parents to put their baby on the bed. Our toddler bed rail is 3 rail for per order, they will provide strong protection for the baby's sleep at night. 25 Gear Height Adjustment Our side fence has 25 adjustable heights which make it suitable for 2''-11.8'' Thick Mattresses Double Sides Bite Clasp Design Double Sides Bite Clasp Design is more stable and more fitting than traditional, leaving no gap between the fence and the bed Separable Cross Bar Separable Cross Bar allows you to sit or lie on the bed at any time without any discomfort