I bought a half-cover a couple of years ago from Custom Car Covers for Ginny, my ND2.
Custom Car Covers
Currently 30% off on Amazon at £69 and an additional 10% off if you click the discount box.
The cover is fine, although when I used it last winter when we were away, the roof had “sweated” and had turned green in places due to lack of ventilation.
This time, I’ve put three pool noodles across the top of the roof (longways windscreen to boot) and put the cover on.
There is now a very nice gap between the roof cover and the soft-top so hopefully there will be enough ventilation to stop any mold growing.
The only criticism of the cover is the “tongues” that have to be caught in the boot lid/doors. The boot lid ones are fine but at the front of the door and at the back by the door handle the tongues are very small and it’s a bit of a challenge to get them to stay in whilst you try and shut the door from a 1" gap.
Picture from their website
Product description
The Mazda MX5 soft top tailored half cover has been designed to fit easily using a concealed magnetic fixing system.
Made from a PU coated woven polyester it is totally waterproof providing complete protection from the outside elements.
The cover is completely waterproof and also offers protection from UV light helping to protect your Madza interior.
The cover is secured to your vehicle using our concealed magnetic system along with material tabs that trap into the boot area, drivers and passenger doors meaning the cover cannot be removed without unlocking the car.
Comes with a free storage bag.