
Fjallraven Men's Singi Heavy Flannel Long Sleeve Shirt
Warmth, durability, and style in one rugged shirt.
The Fjällräven Singi Heavy Flannel Shirt is a long-sleeved outdoor essential designed for comfort and durability. Made from soft yet heavy cotton flannel, it offers a warm and breathable fit for outdoor activities. Reinforced with G-1000 fabric on the collar, cuffs, and pocket flaps, it provides added durability where it's needed most. A button-down collar, roll-up sleeve function, and chest pockets with pen holders enhance its versatility, making it a dependable choice for both work and adventure.
Features
- Heavy cotton flannel shirt in a regular fit
- Roll-up sleeve function with button fastening
- Button-down collar for a classic outdoor look
- Two chest pockets with buttoned flaps and pen holders
- Reinforced with G-1000 fabric on collar, cuffs, and pocket flaps for extra durability
Specifications
- Fit: Regular
- Claimed Weight: 440 g
- Body Material: 100% cotton flannel
- Reinforcements: G-1000: 65% polyester, 35% cotton
Fjallraven Men's Tops and Jackets Size Guide
How To Measure Your Size

Be sure to keep the tape level, and not too tight. Then use the chart as a guide, but allow for some variance based on how you prefer the garment to fit.
CHEST: Measure the full circumference of your chest just below your armpits.
WAIST: Find the top of your hip and measure the full circumference around your body.
Size Chart
Size | Chest (cm) | Waist (cm) |
---|---|---|
X-Small | 86 | 72 |
Small | 92 | 78 |
Medium | 98 | 84 |
Large | 104 | 90 |
X-Large | 110 | 96 |
XX-Large | 116 | 102 |
XXX-Large | 122 | 108 |
Measurements refer to body size, not garment dimensions.