Not very much weight; she generally carries about 7-10 pounds in her rack pack. Her running shoes are usually tucked under the rack pack. There is only 25 pounds total on her bike, not counting water and the 2 ears of corn It is a commercial made cargo net, and she likes it. She even has our 2 daughters using them. She bought them a set before our annual family tour last summer which really influenced their choices.

I do have to admit it does work fairly well. She carries one of the nets in her "around town bike's pannier. She loaned it to me one day when we rode to the post office to pick up mail. A large part for my table saw was waiting for me. It was a 6" x 6" x 32" box weighing about 25 pounds. It was an awkward load and did shift around a bit coming home. I believe it is probably more secure than the setup I use.