Denim junkies, J. Crew has your number -- and apparently it's 484.  As in Lot 484, the name given to a five-pocket selvage men's jean the retailer is launching mid-May, in collaboration with the Japanese denim brand Warehouse.

The Lot 484 jean by Warehouse for J.Crew is apparently named after the street address of the J. Crew men’s-only shop at 484 Broadway in Manhattan --  one of just two brick-and-mortar stores that will be stocking the style (which will also be sold online).

Though the number won't mean much to those who aren't hard-core denim nuts, we're told the jeans are made using Warehouse's Japanese-loomed 1,000xx 14-ounce selvage denim and based on the Warehouse 800 model (but with a slightly dropped front rise and different color stitching).

Here's another number for you: 34 -- as in a 34-inch inseam, the only size in which the jeans will be available. The J. Crew crew will alter the length free of charge -- which could take as long as five days, since (here comes another number for you) they're being done on a rare, vintage Union Special 43200 chain-stitch sewing machine, which we have faith will craft an appropriately authentic and covet-worthy hem -- since hemming denim was the reason the Union Special 43200 was created in the first place.

One final number of note is 300 -- which you'll find on the price tag. Dropping $300 on a pair of jeans might sound expensive, but my guess is, to true jean junkies, the numbers add up just about right.

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Photo: Lot 484, a denim collaboration between J. Crew and Japanese denim label Warehouse, hits the shelves at just two New York City brick-and-mortar stores (at 484 Broadway and 235 W. Broadway ) and online at jcrew.com -- in mid-May, and will retail for $300. Credit: J. Crew.