The KeyBudz Artisans series is handcrafted by highly skilled artisans using genuine premium leather, selected exclusively for use with our protective cases. Each case is made of a 4-piece shell. The trays are individually wrapped in textured and refined leather and then thermally treated, a process that takes nearly half a day. The case cover is pre-glued with RSA (embroidered security adhesive) to ensure a secure and long-lasting fit. The Artisan series combines an unparalleled level of craftsmanship and first-class tanning to create the world's first full-grain leather case for AirPods.