Callum has joined forces with footwear designer Rockwell Princely on the project, which was revealed in his latest YouTube video.
In the upload, Callum said the idea has been in progress for ‘about a year’.
He said: “It’s probably the most excited I’ve been for a project, maybe since I’ve started YouTube, like legit.
“I’ve found an incredibly talented designer called Rocky and he’s been basically helping me bring everything to life, and along the way teaching me about design so I can get better at that too.”
Callum also confirmed that one shoe will be on sale at first, with the team currently making “minor adjustments” to the final design.
“We’ve been taking feedback from Instagram. I’ve been listening to you guys – what you like, what you don’t like,” he said.
A video sharing the latest version of the product was posted on the brand’s official Instagram account on Monday. A release date has yet to be announced.