Amazon.com: Aicosineg Cable Sleeve Braided Sleeving PET Wire Loom Tubing Cable 16.4ft-2/5inch Wrap Protector for HiFi Audio and Video Headphone Cable Protect Wires from Chewing of Pets White : Electronics
PLUSSOUND Apollonian Series Custom Cable for Iems and - Etsy
Spiral Cable Protector Headphone Cable Saver, Cable Protector/Wire Repair/Pet Chew Cable Protector/Headphone Saver Strain Relief Cord Sleeve for USB Data Cable, Earphone etc - Walmart.com
For those of you who don't want to spend too much money on a custom cable, you can just get some paracord and sleeve it! : r/headphones
Amazon.com: Aicosineg Cable Sleeve Braided Sleeving PET Wire Loom Tubing Cable 16.4ft-5/8inch Wrap Protector for HiFi Audio and Video Headphone Cable Protect Wires from Chewing of Pets Blue and Gold : Electronics
Amazon.com: (100ft x 1/2") Cable Sleeve, PET Expandable Braided Sleeving Wire Sleeve Black Cable Wrap for HiFi Audio and Video Headphone Cable Management Protect Cat from Chewing Cords : Electronics
Spiral Cable Protector Headphone Cable Saver, Cable Protector/Wire Repair/Pet Chew Cable Protector/Headphone Saver Strain Relief Cord Sleeve for USB Data Cable, Earphone etc - Walmart.com
Premium Splitter and Sleeve options
Spiral Cable Protector Headphone Cable Saver, Cable Protector/Wire Repair/Pet Chew Cable Protector/Headphone Saver Strain Relief Cord Sleeve for USB Data Cable, Earphone etc - Walmart.com
APureSound - Where The Music Is Always Pure - APS Audio LLC.