A long-sleeve plaid button-up shirt, featuring a green, brown, and blue tartan pattern, laid flat against a white background.
A long-sleeve plaid flannel shirt in green, brown, and blue, folded neatly on a solid white background.
A man wearing a green and brown plaid button-down flannel shirt, shown from the neck down against a plain light gray background.
A man wearing a long-sleeve plaid flannel shirt, shown from the back. The shirt features a green, brown, and blue tartan pattern, with a visible 'HANDUP' brand label on the inside neck collar.
A close-up of a long-sleeve plaid button-up shirt laid flat, showing a green, brown, and navy tartan pattern. The brand label 'HANDUP' is visible inside the collar.
A close-up of a plaid button-up shirt, featuring a green, brown, and purple tartan pattern with a black inner lining and dark buttons.
Close-up of a plaid button-up shirt fabric with a visible HANDUP brand tag near the hem, showing green, brown, and blue tartan pattern on a white background.
A close-up of a plaid flannel shirt collar in green, brown, and purple tartan, with the brand name 'HANDUP' printed in white text at the center.
A close-up of a plaid fabric, likely a flannel shirt or scarf, featuring a pattern of green, rust orange, and purple-blue stripes.
1 10

Flow Flannel

Green/Blue

$69.00
New
3 reviews

HANDUP Flow Flannels combine the warmth and casual style of your favorite flannel with stretch and hidden ventilation designed for active adventures. Whether you're pedaling through cooler weather or kicking back around the campfire, this is one flannel that knows how to move.

  • Stretch polyester/cotton blend for comfortable mobility
  • Hidden rear ventilation panel with breathable stretch mesh
  • Extended back length for added coverage while riding
  • Adjustable two-button cuffs
  • Classic button-up styling with a convenient chest pocket

Best for: Cool-weather mountain biking, casual trail rides, hiking, outdoor adventures, campfires, and riders who want a breathable, stretch flannel that transitions easily from trail to town.
Flow Flannel Features

- Stretch Air Flow Vent Across the Back
- Warm Flannel Material
- Sweat Wicking
- Adjustable Two-Button Wrist Cuffs
- Left Breast Front Pocket

- Model height: 511" | Waist: 30 | Size: M
Size:
Size:
4-Way Stretch

4-Way Stretch

Air Flow Venting

Air Flow Venting

Style Point Increase

Style Point Increase

Machine Washable

Machine Washable

A woman wearing a brown and orange plaid flannel shirt, brown pants, a navy cap, and sunglasses stands next to an open refrigerator in a convenience store, holding a six-pack of bottled beverages.
A close-up of a person wearing a teal and brown plaid flannel shirt with a black and blue patterned cycling glove on one hand, set against a blurred outdoor background.
A woman in a brown and red plaid flannel shirt, white helmet, and sunglasses rides a mountain bike on a forest trail, with a man in a dark shirt and helmet riding behind her on a blurred background.
Two people standing with mountain bikes outside a North River Corner Market storefront, with a blue brick wall, windows, and colorful shop signage in the background.
Two mountain bikers wearing white helmets and sunglasses share a moment with a high-five in a sunlit forest, with a blue bike blurred in the background.
A person viewed from behind wearing a white bicycle helmet and a rust-orange, brown, and beige plaid flannel shirt while riding a bicycle in a sunlit forest.
A man relaxes on a wooden swing bench in an outdoor backyard patio setting, holding a drink. The scene includes wooden Adirondack chairs, a slatted wooden fence, green shrubs, and a barrel planter in the background.
A man in a dark green and brown plaid flannel shirt holding a pint of beer in a dimly lit bar setting.
A woman wearing a brown and beige plaid flannel shirt over a black top and blue jeans, sitting on a wooden bench in an outdoor patio setting.
A man smiling in a convenience store, wearing a green and brown plaid flannel shirt, brown pants, and a white cap with a black logo. He is holding a bottle of amber liquid next to a glass-door refrigerator.

Looks Good Everywhere

Comfy, easy to layer, and breathable enough for a little time on the bike. I’ll be living in this one.

Jordan W.

Surprisingly Cool

Looks like a flannel, performs like riding gear. The mesh back is a game changer when you start heating up!

Megan T.

Looks and feels cool!

This has quickly become my favorite throw-on layer. I can wear it for a ride, stop for coffee or a beer, and never feel like I need to change. The fit is great and the back ventilation is a really nice touch.

Chris L.

Flow Flannel

Built to breath, and as comfy as your grandpa's workshop flannel.

Close-up of a plaid flannel shirt in teal, orange, and purple tones, showing the fabric texture and pattern details.

Additional Details

Why We Made the Flow Flannel

Cooler temps call for flannels. It just feels right to button up a layer of plaid and head out on an adventure. However, we found that other flannels weren't built to breathe or move with you, so we honed in on the zone that we could alter to help with both.

By adding a ventilation flap across the upper back with a hidden stretch mesh panel underneath, the Flow Flannel feels like your favorite shirt but moves with you through any strenuous movements. The flap keeps heat in when you're sitting around, but once your activity starts heating up, the hot air can escape through the back Air Flow Vent, and keep your body temperature regulated during your adventures.

Flow Flannel Features & Materials
  • 70% Stretch Polyester | 30% Cotton
  • Our Unique Stretch Air Flow Panel Across the Back Shoulders, Allows Mobility, While Regulating Heat and Air Flow Around Your Body
  • Added Length in Back to Cover Your Crack
  • Adjustable Two-Button Wrist Cuffs
  • Left Breast Front Pocket for Hundred Dollar Bills or a Pack of Gum
  • Envy of all of Your Friends for Your A+ Style
Tops Wash Instructions
  • Machine Washing on Cold (No Bleach)
  • Air Dry for 24 Hours if Possible
  • If Garment is Needed Before 24 Hours, Tumble Dry on Delicate and/or Low Heat
Crash Replacement

Hey, we’ve all crashed and torn up our gear. If a crash caused the issue, we have a crash replacement program. Just send us an email on our Returns and Exchanges page and we'll get you taken care of.
Warranty

All HANDUP products come with a warranty that carries up to 1-year from the original purchase dates for defects not caused by regular wear and tear.

CLICK HERE TO BEGIN THE WARRANTY PROCESS

  • 5 stars: 2 (67%)
  • 4 stars: 1 (33%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
B
Becky P. (United States)
A great mid weight layer!

I love the redesign on the flow flannel - it's super comfortable and also now has a continuous pattern on the back, unlike some of the prior versions that had a black patch instead. The arms are the perfect length, and even though this is unisex sizing, it worked great for me as a lady.

I was grateful that another reviewer said to size up - I wore an XS in previous versions of the flannel and the S fit great. I typically wear a S or M in women's tops from Handup.

A
Andrew H. (United States)
Great Lightweight mtb shirt that takes edge off cool Fall weather

Lightweight, comfortable, touch of warmth and dries quickly after hard mtb efforts. Feels great. Looks great too

M
Michelle R. (United States)
Runs slightly smaller compared to FlexTop Flannel

Both my husband and I usually wear Medium in the FlexTop Flannels (we have at least 3), and the sizing guide indicated the same chest measurement at 42.5" so that's what I went with for this top. We both felt the new Flow Flannel was tighter in the chest area (likely due to the nature of the vents and a straight stitch used, which eats up stretch). Exchanging in hopes the L fits more like the M FlexTop. Aside from that, the Green/Blue color is spectacular and I think better in person. Crossing my fingers for the size up.