Called Mylo, the offering from Bolt--a company that got its start by developing synthetic spider silk--appears to be created using the same method as MycoWorks', and of course offers the same environmental benefits:
Mycelium is the underground root structure of mushrooms. It grows as tiny threads that form vast networks under the forest floor. We developed Mylo™ from mycelium cells by creating optimal growing conditions for it to self-assemble into a supple, sustainable material that looks and feels remarkably like animal leather. Mylo™ can be produced in days versus years, without the material waste of using animal hides.
Bolt's production methods were developed in collaboration with mycelium-minded Ecovative, who we last saw at the Biofabricate conference. The material they've come up with is strong, abrasion-resistant, can be imprinted with a variety of patterns and its overall dimensions, including thickness, can be controlled.