What is the weight limit for the Purple™ PowerBase? This PowerBase has been retired. For information on our new adjustable bases, click HERE. The Purple™ Powerbase is tested and holds up to 850-pounds. Related articles Is there a weight limit for the Purple Mattresses? Does Purple sell mattress toppers? Does the Purple Mattress Come in a Box? Ascent Adjustable Base™ - Owner's Manual How far apart can the slats be on my foundation or base?