After being hinted at by Union owner Chris Gibbs, the Los Angeles streetwear pioneers are continuing to tease an Air Jordan 4 project.

The latest teaser includes an image of designer Tinker Hatfield's original Air Jordan 4 sketch from 1988, which is possibly indicative of the direction Union will head with its collaboration. Key differences between this sketch and the retail version of the Air Jordan 4 include a zebra-embossed durabuck overlay and the extension of breathable mesh across the full length of the tongue.

Union x Air Jordan 4 Sketch
Image via Union

At this time, there's still no release details for the Union x Air Jordan 4, but it looks like the collab can be considered a lock at this point.

UPDATE (07/14): After months of speculation, leaker py_rates is suggesting that the Union x Air Jordan 4 collab could be hitting shelves in two colorways on Aug. 15 for $250 each. The project will reportedly include the "Off Noir/Lt Fusion Red-Brigade Blue" makeup rumored to release at select retailers worldwide while the "Guava Ice/Lt Fusion Red-Light Bone" colorway is expected to drop exclusively at Union. As of now, the brands have yet to confirm the collab but stay tuned to Sole Collector for updates in the weeks ahead.

UPDATE (07/28): Following last week's first look, new images of the Union x Air Jordan 4 in "Off Noir/Lt Fusion Red-Brigade Blue" have surfaced courtesy of GOAT. This iteration is set for a worldwide release while a still-unseen "Guava Ice/Lt Fusion Red-Light Bone" makeup will reportedly drop as a Union-exclusive. Both pairs are expected to release on Aug. 15 for a retail price of $250.

UPDATE (07/30): Upcycle.sneaks has shared a first look at the Union-exclusive Air Jordan 4 collab in the Guava Ice/Lt Fusion Red-Light Bone" colorway and according to py_rates_, it's slated to launch on Aug. 29 for $250.

UPDATE (07/31): Another look at the Union-exclusive Air Jordan 4 "Guava Ice" via GOAT.

Union x Air Jordan 4 'Guava Ice' DC9533-800 Lateral
Image via GOAT
Union x Air Jordan 4 'Guava Ice' DC9533-800 Medial
Image via GOAT
Union x Air Jordan 4 'Guava Ice' DC9533-800 Heel
Image via GOAT
Union x Air Jordan 4 'Guava Ice' DC9533-800 Outsole
Image via GOAT
Union x Air Jordan 4 Guava Ice/Light Bone-Brigade Blue-Light Fusion Red DC9533-800 Front
Image via upcycle.sneaks
Union x Air Jordan 4 Guava Ice/Light Bone-Brigade Blue-Light Fusion Red DC9533-800 Medial
Image via upcycle.sneaks
Union x Air Jordan 4 Guava Ice/Light Bone-Brigade Blue-Light Fusion Red DC9533-800 Outsole
Image via upcycle.sneaks
Union x Air Jordan 4 Guava Ice/Light Bone-Brigade Blue-Light Fusion Red DC9533-800 Heel
Image via upcycle.sneaks
Union x Air Jordan 4 Guava Ice/Light Bone-Brigade Blue-Light Fusion Red DC9533-800 Box
Image via upcycle.sneaks
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Lateral)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Lateral Detail)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Medial)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Heels)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Heel)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Sole)
Image via GOAT
Union x Air Jordan 4 'Off-Noir/Lt Fusion Red/Brigade Blue' DC9533-001 (Sole Detail)
Image via GOAT
Union x Air Jordan 4 'Off Noir/Lt Fusion Red-Brigade Blue' DC9533-001 Medial
Image via upcycle.sneaks
Union x Air Jordan 4 'Off Noir/Lt Fusion Red-Brigade Blue' DC9533-001 Front
Image via upcycle.sneaks
Union x Air Jordan 4 'Off Noir/Lt Fusion Red-Brigade Blue' DC9533-001 Heel
Image via upcycle.sneaks
Union x Air Jordan 4 Box
Image via upcycle.sneaks