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Established 1991
Milwaukee Leather Men's Grimstone Heavy Duty Plaid Mechanic Flannel Shirt Jacket - MPM1637
14.5oz Cotton Build
Quilted Poly Liner
Dual Front Closure
YKK Hardware
Dual CC Pockets
Reinforced Elbows
Heavy-Duty 14.5oz Cotton
Made from durable 14.5oz cotton denim material for a rugged mechanic-style feel built for riding, workwear, and everyday use.
Built-In Quilted Lining
The built-in poly quilted liner helps add warmth and comfort during cooler rides, commutes, and garage days.
Conceal + Carry Utility
Dual inside left and right storage pockets can be used for concealed carry or as large everyday utility pockets.
Dual Front Closure
Front zipper closure with snap button overlay helps create a secure fit while giving the shirt jacket a clean mechanic-inspired profile.
6 Pocket Storage Setup
Includes 2 chest pockets, 2 lower zippered hand pockets, dual inside storage pockets, and an interior media pocket with wire feed.
Reinforced Rider Details
Reinforced elbow panels, solid upper back panel, snap-down collar, and adjustable cuffs add durability and everyday rider function.
Built Like Workwear. Cut for the Ride.
The Grimstone takes classic plaid mechanic-shirt attitude and loads it with real rider utility - heavyweight cotton, quilted warmth, reinforced panels, secure pocket storage, and a dual front closure built for the road, the garage, and the daily grind.
- Warmth: Built-in quilted poly liner adds comfort for cooler rides and everyday layering.
- Storage: Chest pockets, zippered hand pockets, media pocket, and dual inside concealed carry storage.
- Durability: Reinforced elbow panels, solid upper back panel, and YKK zipper hardware give it a tougher road-ready build.
What’s Included
- 1 x Milwaukee Leather MPM1637 Grimstone Mechanic Flannel Shirt Jacket
- Built-in quilted poly liner
- Dual inside concealed carry storage pockets
- Interior media pocket with wire feed
Tech Specs
Material
Durable 14.5oz cotton denim material
Lining
Built-in quilted poly liner
Closures
Front zipper with snap button overlay
Storage
Chest, hand, media, and dual inside CC pockets
Hardware
Genuine YKK antique color zippers
Model #
MPM1637
Care
- Close snaps and zippers before cleaning.
- Spot clean when needed.
- Hang dry and avoid high heat.
- Follow garment care label instructions for best long-term use.
Why Choose Milwaukee Leather
Built by riders, designed for real-world use, and made to balance rugged styling, storage utility, comfort, and everyday wearability without overcomplicating the ride.
