This is a pair of Cycling bib shorts for laying out your own design. The 3D model has the UV's laid out in a way that would be similar to the actual patterns if you were to make them. This gives you a great way to plan ahead your design and how it will fit on some actual shorts.
Lowpoly version comes with it if you want to tweak anything.
If you are not on how to use this model I would recommend learning the basics of texturing and painting on a 3D model. There are some great tutorials on Youtube.