It is made of aircraft tubing, yet is very lightweight as compared to my old molded plastic rack. no hard material rubbing my feet. Slim and ultra-light. It came on time but I was so disappointed in it. These shoes are pretty sharp looking, and since Im not rich, they are what I wear for formal events (as well as everyday occasions). Apologies for my thumb obscuring part of the third photo! Lifts it high enough to add/remove plates. I got these for my hubby for Christmas. With 2 little kids I decided to get out of town for some fresh air camping. Will last forever!