What is the weight capacity for the Leesa Mattress? Customer Service 14 February 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 Hybrid Mattress? What foundation works best? How do you set up the Leesa Mattress? Are chemical fire retardants used on the mattress? What's inside the Leesa Mattress? Comments 0 comments Article is closed for comments.