Hi danny777,
Brooks Flyer Speical ā Brooks Flyer S. 
Brooks Flyer
http://www.brooksengland.com/catalogue-and-shop/saddles/touring+%26+trekking/Flyer/
Brooks Flyer Special
http://www.brooksengland.com/catalogue-and-shop/saddles/touring+%26+trekking/Flyer+Special/
Brooks Flyer S
http://www.brooksengland.com/catalogue-and-shop/saddles/touring+%26+trekking/Flyer+S/
Brooks Flyer S Special
http://www.brooksengland.com/catalogue-and-shop/saddles/touring+%26+trekking/Flyer+S+Special/
Best regards,
Amuro