The listing, RARE- Sealed NK by NIKE Cologne for Men! has ended.
From the 90's NK for Natural kingdom Eau de Toilette is a 3.4 fl ounce bottle that has never been opened, is still factory sealed and very hard to find.
It is actually not a cologne as stated in the title but Eau de Toilette (EDT) Spray. EDT's contain more juice for staying power so this lasts far longer on you than a cologne.
I can't actually tell you what it smells like because its a sealed box but on the box back it reads: Crystalline waters, wild forests, virgin mountains, the miracle of life and the natural kingdom. I would assume its a natural smelling fragrance. Likely a Collectible as they run from $50- $90 with sealed boxes on the higher end from the few I found. Christmas is Coming!