The above photo has 3 bedding quits in the bag with more room to spare. I used another to hold a bed blanket and king comforter together. It still zipped up fine. 
My hold out Star is for the way the material bag is made. They’re labeled  advertised as a bin. Bins hold their shape  are at least a little bit sturdy. These are bags not bins though. They do not hold shape or supper themselves alone. They will still hold bedding, zip closed and look fine doing so. I’m not returning. I would be unhappy if I had paid a higher price and found out they aren’t actually bins. You get what ya pay for. Overall, I’m still happy with my purchase  recommend as long as you know what you’re buying.