The Shape-Shifting Essential​​ One jacket that morphs from breezy summer layer to winter workhorse – just add or remove the flannel lining. ​​5 Reasons It Works​​ ✓ ​​Breathable Armor​​ – 100% cotton shell wicks moisture during subway commutes ✓ ​​Extended Coverage​​ – 27" back length shields hips from office chair drafts ✓ ​​Strategic Draping​​ – Diagonal front seams create slimming optical illusion ✓ ​​Interchangeable System​​ – Snap-in thermal lining (sold separately) ✓ ​​Global Sizing​​ – 3XL fits 46" chest with tailored shoulder seams ​​Color Coding Guide:​​ ◉ ​​Black 817​​ – Pairs with selvedge denim for gallery openings ◉ ​​Army Green​​ – Matches olive cargo pants for weekend errands ◉ ​​Navy 2182​​ – Worn over dress shirts for business casual Fridays ​​Designer Touches:​​ • ​​Angled Chest Pockets​​ – Keep phones secure during motorcycle rides • ​​Vintage-Inspired Buttons​​ – Oxidized brass accents resist tarnishing • ​​Reinforced Elbows​​ – Double-layered fabric for café table leaners