One Size Doesn't Fit All
All measurements are in inches and reflect body measurements. If you are in between sizes, size up for comfort. Got questions? Email us at info@freeflyapparel.com.
Men
Women
Toddler
Youth
| Alpha Sizes | Numeric Sizes | Chest | Waist | Hip | Sleeve |
|---|---|---|---|---|---|
| S | 30–31 | 36–38 | 30–32 | 34–37 | 32–33 |
| M | 32–33 | 38–40 | 32–34 | 37–39 | 33–34 |
| L | 34–35 | 41–43 | 35–37 | 40–42 | 34–35 |
| XL | 36–38 | 44–46 | 38–40 | 43–45 | 35–36 |
| XXL | 40 | 47–49 | 41–43 | 46–48 | 36–37 |
| 3XL | 50–52 | 44–46 | 49–51 | 36–37 |
How to Measure Yourself
-
CHEST
Measure circumference from the widest part around chest, about 1” down from armpit.
-
SLEEVE
With arm slightly bent, measure from center back neck to shoulder, down arm to wrist bone.
-
TRUE WAIST
Measure around your natural waist, narrowest part of your torso.
-
HIP
Measure around the fullest part of your hips.
Easy Returns & Exchanges
If you try it and it doesn't fit, no problem. Returns and exchanges are quick and easy. Learn More
Men's Seawool Flannel Shirt
Why You'll Love It
Don’t let the timeless looks fool you—the Seawool Flannel packs a punch in the performance department. Built from Seawool fabric, a midweight brushed twill made from upcycled oyster shells and recycled plastic bottles, these flannels deliver many of the same benefits as our powered-by-bamboo styles: they’re temp-regulating, quick-dry, anti-odor, and oh-so-soft. Bonus points: all those recycled plastic bottles never get the chance to end up in our oceans. Adventure-ready, sustainable, and classically handsome? Sign us up.
One Size Doesn't Fit All
All measurements are in inches and reflect body measurements. If you are in between sizes, size up for comfort. Got questions? Email us at info@freeflyapparel.com.
Men
Women
Toddler
Youth
| Alpha Sizes | Numeric Sizes | Chest | Waist | Hip | Sleeve |
|---|---|---|---|---|---|
| S | 30–31 | 36–38 | 30–32 | 34–37 | 32–33 |
| M | 32–33 | 38–40 | 32–34 | 37–39 | 33–34 |
| L | 34–35 | 41–43 | 35–37 | 40–42 | 34–35 |
| XL | 36–38 | 44–46 | 38–40 | 43–45 | 35–36 |
| XXL | 40 | 47–49 | 41–43 | 46–48 | 36–37 |
| 3XL | 50–52 | 44–46 | 49–51 | 36–37 |
How to Measure Yourself
-
CHEST
Measure circumference from the widest part around chest, about 1” down from armpit.
-
SLEEVE
With arm slightly bent, measure from center back neck to shoulder, down arm to wrist bone.
-
TRUE WAIST
Measure around your natural waist, narrowest part of your torso.
-
HIP
Measure around the fullest part of your hips.
Easy Returns & Exchanges
If you try it and it doesn't fit, no problem. Returns and exchanges are quick and easy. Learn More
Key Features
Seawool fabric (made from oyster shells and recycled plastic bottles) is naturally temp-regulating and anti-odor
Fast dry times make this flannel ideal for days on the water
Perfect for stashing your shades or other small essentials
Seawool
Fabric
- XVerified ReviewerRated 4 out of 5 stars2 days agoReviewingMen's Seawool Flannel Shirt - Storm Cloud PlaidSleeve Length
I tried this on and the sleeve length was a little short for me. I would say I am not the “average” fit for this so take from that what you will. I like the sleeves length to be a little longer for my fit and preference. As a result this shirt doesn’t work for me in that regard.
What is your height? 5'10-6'0What is your weight? 140-160What size did you purchase? MFor what activity do you recommend this product? Casual Wear - Jeff C.Verified ReviewerRated 5 out of 5 stars1 week agoReviewingMen's Seawool Flannel Shirt - SandstoneMy new favorite flannel.
I LOVE this flannel, and I'm going to buy a couple more. I have a hard time finding flannels that fit well...I am a hair above 6'0" and about 200 lbs, long arms, and I'm in this weird spot with between a L and XL. Usually I buy a L, it fits perfectly off the rack, but then inevitably it gets put in the dryer and doesn't fit me anymore. This one shrank a tiny bit but still fits me perfectly, and I really like the cut. Plus it is SOFT and unbelievably comfortable...great temperature regulation, it hasn't gotten too cold yet but it's perfect for fall. I love the fabric, whatever it is. Nice work FF.
What is your height? 6'1-6'3What is your weight? 200-220What size did you purchase? LFor what activity do you recommend this product? Casual Wear - Zack T.Verified BuyerRated 5 out of 5 stars1 month agoReviewingMen's Seawool Flannel Shirt - Storm Cloud Plaid Storm Cloud Plaid / SFantastic shirt!
Once again, Free Fly never disappoints. Super soft and stylish shirt that's sustainable to boot!
What is your height? 5'7-5'9What is your weight? 120-140What size did you purchase? SFor what activity do you recommend this product? Casual Wear - Robert F.Verified BuyerRated 5 out of 5 stars3 months agoReviewingMen's Seawool Flannel Shirt - Deep Navy Deep Navy / LFinally found a solid color flannel
Good color
What is your height? 5'10-6'0What is your weight? 200-220What size did you purchase? LFor what activity do you recommend this product? Casual Wear - Kerry M.Verified BuyerRated 5 out of 5 stars5 months agoReviewingMen's Seawool Flannel Shirt - Sagebrush Stripe Sagebrush Stripe / SFlannel
Love it!!!
What is your height? 5'4-5'6What is your weight? 120-140What size did you purchase? SFor what activity do you recommend this product? Casual Wear, Hiking - Stephen E.Verified BuyerRated 5 out of 5 stars6 months agoReviewingMen's Seawool Flannel Shirt - Nutmeg Stripe Nutmeg Stripe / LThe Best of the Best
While I have purchased many Free Fly items over the past two years since my dermatologist recommended the clothing line to me as a way of protecting my skin after a bout of melanoma, I have now started expanding my clothing choices by purchasing the Men’s Seawool Flannel Shirt line. I love these shorts in that they are both soft and comfortable and yet dressy enough to wear out and about. I have tried competitors shirts, who will remain nameless here, and they simply don’t match Free Fly in quality and fit. Do yourself a favor and buy try one of these shirts. You won’t regret it…
What is your height? 5'10-6'0What is your weight? 140-160What size did you purchase? LFor what activity do you recommend this product? Casual Wear, Work, Travel - Jeff I.Verified BuyerRated 5 out of 5 stars7 months agoReviewingMen's Seawool Flannel Shirt - Deep Navy Deep Navy / MJeff 1
Soft, sustainable , looks and fits good. Purchased for my youngest son.
What is your height? 5'7-5'9What is your weight? 140-160What size did you purchase? MFor what activity do you recommend this product? Work - JaredRated 5 out of 5 stars8 months agoReviewingMen's Seawool Flannel Shirt - Nutmeg Stripe Nutmeg Stripe / XXL5 Stars
This is the most comfortable flannel I have. Very soft and love the fabric. I also hae Kuiu flannels, and i like this one more because it has a little bit of stretch to the material and the softness is the best yet.