So far so good! The metal is very sturdy and won't bend. I have a full size mattress (with no box spring) on the full size bed frame. The frame does not slide, but  it's also sitting on a 10x12 rug to prevent scratches on my hardwood floors. The frame does sit low, so if you want to use under the bed as storage space you only have about a foot of room. I put my shoes under my bed, but I wasn't able to fit my larger storage tubs.