My trailer is pretty much the same as the one 10 Wheels posted above. Sure it says it has 100 lb. capacity, but I really don't think I can physically fit 3 reusable bags from Aldi plus 6 or 7 plastic bags from Walmart in there along with my kid. We typically buy 2.5 to 3 gallons of milk at a time (5 or 6 1/2 gal cartons of lactose-free and almond milk), so that stuff is VERY heavy and also very bulky.

Plus that advertised weight capacity is supported by the "sling" seat, which hangs from the top cross-tube and is also supported by a strap underneath the front edge of the seat. I wouldn't want a bunch of heavy stuff supported only by the fabric "bottom" of the trailer. The stuff would probably scrape the ground lol. I would have to do a crate like in 10 Wheels' pic, but then no room for kid.