Ref Higgsy question above - my Seats are the sports style zetec seats so they fitted very nicely. Its a good tight fit and takes about 2 hours to complete the job. Its fairly physical but well worth taking your time.
The covers are secured by straps underneath that tighten front and back, Velcro and clips. They covers fit so snugly anyways that they don't even need additional securing.
I don't use lumbar myself so no hole for the handle - but its very easy to gentle move the level inside the covers - I would imagine the seller / maker would fit a hole if you asked him (Ben Liu). He certainly wanted loads of photos of the original seats showing headrests, front back and splits before he started.
Took about 2-3 from placing the order to receiving the covers. Delivery was free and I also didn't get hit by customs.
I choose the blue to match my existing blue stitching in the wheels and mats.
Absolutely shed loads of Focus stuff on aliexpress.com like sat covers, carbon fibre wrap for the dash already cut and ready to stick, badges, lights etc etc.
Good find methinks if it saves a few bob for anyone!!