I think it is the center zip part of these purse organizers....

JennyKrafts Purse Insert (3mm Felt, Detachable Pouch w/Metal Gold Zip), Tote Bag Organizer Pockets 

https://www.amazon.com/dp/B07PHR2TXL/ref=cm_sw_r_em_apa_i_-Cx6Cb6ESV12E

Edited to add:

Actually this one seems more similar....

Purse Organzier, Bag Organizer with Metal Zipper (Medium, Grey) 

https://www.amazon.com/dp/B07DKHMHPK/ref=cm_sw_r_em_apa_i_mOx6Cb5CDG0H0