There are many styles of iPad air keyboards available from many companies, like Amazon, Ebay and the following is the keyboard made by Cell-phonecover.com.

1. Best Keyboard iPad Air For You IPK04

Function:
1. built-in wireless Bluetooth 3.0 keyboard.
2. For any fashion slim aluminum design models.
3. Micro usb universal charging interface, charging more convenient.
4. This Bluetooth keyboard can be connected to mobile phone use on the Apple iPhone.
5. Built-in rechargeable lithium battery.
6. Light weight, small sound button, waterproof, dustproof.
7. Sleep mode to save power button.

2. Cheap Best iPad Air Keyboard IPK02

There are 5 color for iPad Pro 11″/10.5″, Air 5/4/3, iPad 2019/2020/2021/2022, Mini 6, Blue, Pink, Purple, Black, Green.
Product Feature:
1. Rotate horizontally and vertically
2. With trackpad

You can find more styles of iPad air keyboards at https://www.cell-phonecover.com/shop/keyboard/.