Split leather is not as durable and high-quality as full-grain leather. Split leather is a byproduct of the process that creates full-grain leather.
Split leather - - The Leather Dictionary
Full Grain Leather, Genuine Leather or Split Leather - DiLoro Leather
What is Split Leather? From History to Care Tips and Beyond – Eiken Shop
This is how you can determine the quality of leather
What is Split Leather? Is it the Same as Splitting Leather? – LeatherNeo
What is Split Leather? - Definition, Types, Facts
Full Grain vs Split Leather: What's the Difference?
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Split leather - - The Leather Dictionary
How To Identify Different Types of Leather & Leather Quality