You can see on the bag straps they clip through the shoulders slightly (there is also some clipping on the front straps too), let me know if you need any help with the solve otherwise, let me know when you’ve updated the model files and emailed ‘legal’ and I’ll approve right away
You’re under the 1.5k tri limit atm so you have some leeway for a few extra tris to help with the deformation of the straps! I’d recommend adding supporting edges that align with the torso mesh so when the straps deform, with normalised weighting they won’t clip through and will just sit nicely on the surface when animated.
If you need further help, slide into my DMs on Discord. @Malloy me in ‘making wearables channel’ and we can take it from there,