NOT SAFE FOR KIDS. Ordered two of these for my kids and the standard size twin beds that I have were TOO SMALL in the frame leaving a 4 inch gap between the mattress and the frame(see photo) which is NOT safe at all for kids. When I called to return it, Wayfair charged me $80 to return. Buyer beware. Not only is this product not safe for kids, Wayfair will charge you to return it even though the product is not sized properly for the twin bed like it says it is. If they had just taken the return for free and refunded all my money I would have left a better review.