In order to add weight to my chin ups and dips I recently made a dip/chin belt. This is one of the easiest DIY fitness devices to make. All that is needed is some chain, a pool noodle (make sure it is the kind with a hole in the middle), a carabiner and duct tape.
Once you have your material it is easy to put it together. First you will need to measure the pool noodle and cut it to the correct length. The easiest way to do this will be to wrap it around your waist and cut it to fit you. I cut mine a bit longer than what I thought I would need and then cut it down later after a trial run. After you have the pool noodle cut to the correct length run the chain through it. Put the carabiner on one end of the chain. Next wrap duct tape around the entire pool noodle. Make sure to use a lot of duct tape. If you don’t, the chain will eventually start to pull through the pool noodle. This will be the longest part of the process. Now you can slide some weight plates or a kettle-bell on to the chain and you’re ready for weighted pull-ups, dips or even hip belt squats.
Make sure to start light and work your way up. I found that a 20 lb vest felt much lighter than 20 lbs on the belt. So far it is working great. It is comfortable, strong and versatile.