Since I get a new graphic tablet I could test it and finish is the texture of this prop that I abandoned time ago. Also, I updated the mesh a bit and improved the LODs.
If you use this in your map let me know. If you edit the models and upload them here or in other site, credit me.
Dropbox link with the rigged version for SFM.
Boxing Sack 1.1
Boxing sack with team colors for the respawn rooms