Heavyweight Long Sleeve Size Guide
Heavyweight Long Sleeve Size Guide
Our heavyweight long sleeve is printed on the Bella+Canvas 3511 — a substantial 6 oz, 100% Airlume cotton tee with a relaxed, boxy cut. It wears a touch oversized on purpose. Love a closer fit? Size down one.
Size Chart
Measurements are in inches. “To fit chest” is your body measurement; “garment width” is the tee laid flat, measured pit-to-pit (one layer).
| Size | To Fit Chest | Garment Width (pit-to-pit, flat) |
Body Length | Sleeve Length (center back) |
|---|---|---|---|---|
| S | 34–37" | 18" | 28" | 33.5" |
| M | 38–41" | 20" | 29" | 34.5" |
| L | 42–45" | 22" | 30" | 35.5" |
| XL | 46–49" | 24" | 31" | 36.5" |
| 2XL | 50–53" | 26" | 32" | 37.5" |
Measurements are approximate and may vary by up to an inch, as each piece is made to order.
How to Measure
The easiest way to nail your size is to measure a long-sleeve tee you already love and compare it to the chart above.
Chest: Lay the shirt flat and measure straight across from underarm to underarm (pit-to-pit). That's the “garment width” column.
Length: Measure from the highest point of the shoulder down to the hem.
Sleeve: Measure from the center back of the neck, across the shoulder, and down to the cuff.
A Note on the Fit
This is a heavyweight tee with a relaxed, boxy cut — a little wider and a little shorter than a standard fitted long sleeve. That easy, slightly oversized drape is the look it's made for, and it layers beautifully over a tee or under a jacket.
If you prefer a closer, more tailored fit, size down one. If you love that roomy, throw-it-on feel, stick with your usual size.
Still not sure? We're happy to help — reach us at hello@knownpack.com and we'll point you to the right size.
Get Outside. Stay Present. Give Back.
The Known Pack
Our Mission
Leave the pavement behind. Find your wild.
Welcome to The Known Pack — a premium outdoor and nature-inspired apparel brand designed in Colorado, built for the people who believe the best moments in life happen when you finally get outside.
We create ultra-soft, garment-dyed Comfort Colors tees, vintage-washed fleece, and nature-inspired gear built around butterflies, wildflowers, botanical art, and the Rocky Mountain landscapes we love. Whether you're a backcountry hiker, a weekend camper, a gardener, or someone who just needs to slow down and breathe fresh air — The Known Pack was created to be the gear you reach for every time you head outside.
Our Story
Born Near the Foothills of the Rockies
Born near the foothills of the Rockies in Highlands Ranch, The Known Pack started with a simple belief: gear should do more than just look good. It should tell a story.
It should remind you of a wildflower meadow in full bloom. A cold morning at the trailhead. The sound of wind through the pines. A fresh start off the grid.
We wanted to create premium, broken-in apparel that feels like an old favorite from the very first wear — pieces that make you want to pack the car, roll the windows down, and see where the dirt road ends.
Wearable Art
For the Nature Lover
Our designs celebrate the natural world — swallowtail butterflies, wildflower fields, lavender, botanical illustrations, and the quiet beauty of the outdoors. These aren't just tees. They're wearable art for the woman who notices the butterflies, tends the garden, and finds peace in nature.
Every design is crafted with care, made to order just for you, and built to be worn for years.
Protecting Our Playgrounds
We don't just explore the wild — we protect it.
10% of every purchase goes directly to trail restoration and park conservation, helping keep the wild meadows, wildflowers, and open spaces we all love accessible for the next generation. When you wear The Known Pack, you're not just wearing something beautiful — you're helping protect the places that inspire it.
How We Give BackOur Promise
We'll See You Out There
We're here to create premium gear that makes you want to get outside. We care about delivering a flawless experience, backing our products with real support, and outfitting a community of people who share our love for the outdoors and the natural world.
Thank you for being part of the pack. We'll see you out there.
Max
Founder, The Known Pack
Find Your Wild
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