Hip Belt Issues for 13 y/o Son

[wedgetail]

Just wondering if anyone can comment on a backpack fit issue I’m having with my son. He’s 13, on the skinny side of average. I’ve already shortened the hip belt and he can tighten it as much as he wants now. Once the feels in the right place and the belt is really tight everything is good for 10-15 minutes but then it slips down noticeably and the pack rubs on his collar bone.

I’m thinking the hip belt is too wide - the padding is almost 4” where it joins the frame/bag. Im
Wondering if this is the issue and not conforming to his torso. I can open the fabric, trim the padding and restitch but wanted to get some opinions first. The pack is a North Face Terra 65 - not high end but hopefully he can use it on our upcoming 4 day hunt in October to work out what/if to upgrade to.

 

[LCguy]

Is it the proper length for his torso? I had this same problem and fixed it by adjusting the harness a little shorter.

 

[wedgetail]

Is it the proper length for his torso? I had this same problem and fixed it by adjusting the harness a little shorter.

Yes - I had to alter it but it is now short enough - on minimum it is too small