Superb sturdy frame. Excellent instructions. Toolkit provided. Took literally 20 mins for two of us to put together. Strong steel will definitely support our very heavy mattress. Wonderful value for money. Anti slip tape prevents mattress from moving. Slats in a Velcro roll that attach to Velcro tape on the frame. Slats easy peasy to install. Excellent support and slept like a log for the first time in months after the cheap cardboard top sank on my old divan base. HIGHLY RECOMMEND