Iron Heart IHSH-433-RED Heavy Flannel Rider’s Overshirt

Rugged, warm, and windproof—our heavyweight flannel shirts are a staple of every Iron Heart fall/winter collection. This season, we’re introducing the new “Rider’s” cut, designed with heavy-duty hardware and a roomier, boxy fit for heavy layering. Built for the open road, features include a two-way zipper beneath a snap-fastened over-placket for enhanced wind resistance, large secure chest pockets, and heavy-duty copper snaps throughout—offering motorcyclists the warmth and comfort of a flannel, with the functionality of a jacket.

In our efforts to explore more sustainable alternatives to the Aspero cotton used for our traditional ultra heavy flannel (UHF) shirts, this model is cut from a new 10oz Japanese heavyweight flannel. Softer and slightly lighter than its Aspero counterparts, we’ve heavily brushed the reverse of the fabric to increase thickness and improve heat retention. While the 10oz weave means we’re not classing this as a UHF shirt, weight isn’t everything—this fabric still delivers the warmth, comfort and rugged characteristics that our heavyweight winter flannels are renowned for.
Product Description

Made In Japan
- Designed by Shinichi Haraki, handmade by WORKS INC. in Japan
10oz Japanese Heavy Flannel
- 100% cotton

- Single brushed face / heavily brushed reverse

- Reactive-dyed warpIn weaving, the weft is the term for the thread or yarn which is drawn through the warp yarns to create cloth. Warp is the lengthwise or longitudinal thread in a roll, while the weft is the transverse thread. A single thread of the weft, crossing the warp, is called a pick. Terms do vary (for instance, in North America, the weft is sometimes referred to as the fill or the filling yarn). and weftIn weaving, the weft is the term for the thread or yarn which is drawn through the warp yarns to create cloth. Warp is the lengthwise or longitudinal thread in a roll, while the weft is the transverse thread. A single thread of the weft, crossing the warp, is called a pick. Terms do vary (for instance, in North America, the weft is sometimes referred to as the fill or the filling yarn). yarns

- Fade-resistant to ensure a steadfast colour
Cut & Features
- Rider's shirt
- Oversized fit
- Two-way YKK zipper under snap fastening placket
- Double layer placket with taped edging to protect against wear from zipper
- Large flap down chest pockets with snap fastenings
- Straight back yoke
- Straight hem with split seam gussets
Optional Upgrades
This garment is fitted with Iron Heart branded oversized copper snap fastenings. Want to customise? Upgrade with a choice of alternative ‘heavyweight’ snap options when you add to cart
Constructional Stitching
- Single and double needle stitching
- Poly/cotton thread for enhanced strength
- Bar tack pocket reinforcements
- Chainstitched side seams
- Felled internal seams