Large piece heavy black plastic (rolled) (Galgate LA2)

The roll is about 4' tall and the diameter is about 6". It is heavy and a bit awkward to lift. (The photo is NOT of the actual roll.)
From memory the plastic is folded in four lengthwise so I guess the width of the opened-out sheet to be about 16'. I can't estimate the length.
The plastic is heavy gauge but there are some little bubbles in it making it not utterly waterproof so it would be no use as pond lining, for instance.
The outside of the roll is not clean or dry because it's been kept in the garden.
Fair Offer Policy applies and I'll offer it to the successful Freegler on Tuesday 17th Sep evening.

Fair Offer Policy: I agree to take a while before choosing who gets this. This gives people on the daily digest, or those who are online less frequently, a fair chance to reply to the offer.