What's the weight capacity for the Leesa Mattress? Customer Service February 14, 2018 21:24 Updated The Leesa mattress is designed to support individual weights up to 300lbs. Related articles What's the weight capacity for the Leesa Hybrid? What foundation works best? How do you set up the Leesa Original? Are chemical fire retardants used on the mattresses? What's inside the Leesa Mattress? Comments 0 comments Article is closed for comments.