We’ve already seen pictures of LG’s leather-clad G4, but we weren’t sure exactly what kind of leather the company was planning to use. A new blog post clears that up, revealing exactly what it takes to make the LG G4’s leather design.

It turns out the entire process takes a full 12 weeks to complete. LG is also using high-quality cow leather with the smallest pores possible. It said it had to overcome some roadblocks, including making the leather resistant to moisture while also allowing it to breathe enough as to prevent the phone from overheating. The result should be a very luxurious smartphone with plenty of power under the hood.

The LG G4 is set to pack a 5.5-inch Quad HD display, a 16-megapixel rear camera, and an 8-megapixel front-facing shooter. We’re also expecting a Snapdragon 808 processor and a 3000mAh removable battery based on recent leaks. Whether that’s enough to take on the Galaxy S6 remains to be seen, but LG clearly isn’t pulling any punches.

The G4 is making its official debut next week on April 28, and we’ll be covering the action live from New York City.