1. The case for AirPods 3 (2021 released version), and it is made of high quality hard PC hard material. We can also produce this product with ABS material which is cheaper, it’s up to buyer’s requirement.
2. The groove case is made for adding leather or microfiber by yourself. We do not recommend retailer order this one, as it is usually sold to leather factory or microfiber manufacturers, who can add more leather material on the case by themselves. You can even add diamond leather, fluffy fur or any material material which can be pasted on the groove part.