DIY TrekPak Dividers 

Well its been 4 to 5 months that I've have made them and it has hold up pretty well to this date. The good thing is that if it ever breaks it wont break the bank to make it again. :)

I'm pretty sure they use corrugated plastic(same material used here) for the substrate of the dividers, not sure what type of foam they use, regardless materials of equal quality are available for this DIY version.

Agreed! I like the Trekpak because it provides a cleaner, more organized look. But when it comes to ultimate protection, foam is superior.

Aaron Galindo Thsnks

Most of the foam and Padding I found on my local craft stores like Michaels or Joann also in Amazon

fengstang7 Thanks, hope it saves you few bucks

I used the elastic hair straps from a dollar store. I cut them in half to make the strings

Pengyu Zhu I think it’s corrugated board

depends on where you live, coraplast in the states.