MuskOx Flannels
MuskOx Grand Flannel | 8.9oz Heavyweight Cotton | Lake Blue
MuskOx Grand Flannel | 8.9oz Heavyweight Cotton | Lake Blue
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MuskOx was founded to create rugged, timeless American menswear that supports wildlife conservation. They focus on ethical manufacturing in Portugal (known for the world's best flannel mills) and donate $5 from every flannel purchase to the Alaska Wildlife Conservation Center to support wolves, bears, and bison. When you buy this shirt, you are supporting the wild.
Rated "Best Heavyweight Flannel" of 2025 by GearJunkie
This is the shirt that put MuskOx on the map. Rated "Best Overall Flannel" for two years running (2023-2024) and now crowned the "Best Heavyweight Flannel" for 2025, the Grand Flannel is the anchor of the Kempain Family Outfitters mercantile collection.
We chose to stock this specific shirt because it redefines what a flannel can be. Clocking in at a massive 8.9oz per square yard, it is two times heavier than the average department store flannel. It feels less like a shirt and more like a soft, wearable shelter.
Why It's a Customer Favorite:
- Maximum Warmth: At 8.9oz, this is the thickest, warmest shirt in our rotation. It is designed for those crisp mornings when a jacket feels like too much, but a standard shirt isn't enough.
- Unmatched Softness: MuskOx doesn't just brush the outside; they double-brush the interior as well. The result is a rugged exterior with a blanket-soft feel against your skin.
- Refined Ruggedness: While it’s built for the wilderness, the Portuguese tailoring gives it a clean, structured look that fits in perfectly at a holiday dinner or the office.
- Ethical Origins: Woven in Portugal from 100% ethically sourced cotton.
The Kempain Promise: If you are looking for the ultimate "cozy" factor without sacrificing durability, this is the one. It is the heaviest shirt we sell, and once you feel the weight, you’ll understand why it keeps winning awards.
Care Instructions
Wash on cold gentle cycle. Dry on low heat or hang dry. Do not bleach. Iron on low.
Shipping & Returns
These items ship directly from the MuskOx warehouse (Charlotte, NC or Detroit, MI) to reduce carbon footprint.
We accept returns on unwashed/unworn items within 30 days of purchase. Please contact hello@kempain.com to initiate a return.
+ Flannel Collection Guide (Compare Models)
| MODEL | WEIGHT | MATERIAL | FEEL | TEMP | FIT |
|---|---|---|---|---|---|
| GRAND FLANNEL | 8.9 oz | 100% Cotton, Double Brushed | Soft, Thick, Cozy | 35–65°F | Classic, Tall |
| FIELD GRAND | 8.2 oz | High-Density Weave | Dense, Strong | 30–60°F | Classic |
| YUKON JACKET | 8.7 oz | Brushed Interior Only | Dense, Firm | 30–60°F | Jacket Fit |
| LINED YUKON | 11.2 oz | Twill Exterior, Lined | Very Heavy | 20–50°F | Jacket Fit |
+ Official Fit Guide (Dimensions)
Classic Fit: Contours the chest, body, and arms with a slight taper at the waist. A tailored look that allows for movement.
Model Reference: Luis is 6'2", 200 lbs and wears a size Large.
Classic Fit Dimensions (Inches)
| Measurement | S | M | L | XL | XXL | XXXL |
|---|---|---|---|---|---|---|
| Chest | 34-37" | 38-41" | 42-45" | 46-49" | 50-53" | 54-57" |
| Waist | 32-35" | 36-39" | 40-43" | 44-47" | 48-51" | 52-55" |
| Body Length | 29.5" | 30.25" | 31" | 31.75" | 32.75" | 33.5" |
| Sleeve Length | 35.5" | 36" | 36.5" | 37.25" | 37.75" | 38.5" |
Tall Fit (Extra Length)
| Measurement | L Tall | XL Tall | XXL Tall |
|---|---|---|---|
| Chest | 42-45" | 46-49" | 50-53" |
| Body Length | 32.5" | 32.25" | 34.25" |
| Sleeve Length | 38" | 38.75" | 39.25" |