I have a synthetic shotgun slip (it's a Napier, I think the Protector, see Napier Protector 4 Shotgun Bag | Uttings.co.uk) and one synthetic rifle slip (will take a scoped rifle, but not one with a fixed bipod).
They are not new, but both have been barely used.
I am happy to give them away to someone just starting out in the sport.
All I'd ask is that the postage cost is covered. Of course if anyone feels so inclined, a donation to H4H would be very welcome.