The OA Merch Size Guide - Finding Your Perfect Fit in 2026

Why The OA Merch Sizing Matters

Getting the right fit for The OA merch isn't just about looking good - it's about feeling connected to the story and the community. Whether you're repping the Crestwood Five or channeling Prairie's journey, your merch should feel like a second skin. But here's the thing: most of our pieces are unisex, and sizing can vary between garment styles. This guide breaks down exactly how to choose the right size for tees, hoodies, and more.

In my experience as a merch designer, the number one frustration fans have is ordering a size that ends up baggy when they wanted fitted, or vice versa. Let's fix that. This guide covers everything from measuring yourself to understanding the oversized look that's popular in The OA fan circles.

Men's T-Shirt and Hoodie Sizing

Step 1: Know Your Chest and Length

For men's tees, chest width is the most important measurement. Lay a shirt flat, measure 1 inch below the armpit seam from side to side. Double that number for your chest circumference. For example, a size Large usually has a 22-inch chest width (44-inch circumference) and a 29-inch length. Our classic The OA Symbol Tee follows this standard.

Step 2: Account for Shrinkage

Most of our tees are 100% cotton preshrunk, but there can be 2-3% shrinkage in the first wash. If you're between sizes - say your chest measures 42 inches but the Large says 44 - go up a size to allow for shrinkage and a relaxed fit.

Step 3: Hoodie Sizing is Different

Hoodies like our Hap's Lab Pullover have a roomier fit by design. They're cut with extra space in the shoulders and chest. If you usually wear a Medium tee, a Medium hoodie will feel loose but not sloppy. For a snug hoodie fit, size down one.

Common Mistake to Avoid

Don't rely on your t-shirt size for hoodies. Hoodie arms are also longer - expect an extra 1-2 inches in sleeve length. Measure a current hoodie you like for the best comparison.

Women's and Unisex Fit Guide

The Unisex Reality

Unisex sizing is based on men's measurements. A unisex Small is closer to a men's Small than a women's Small. If you typically wear women's size Medium, order a unisex Small for a fitted look, or a Medium for an intentionally loose, oversized vibe.

Step 4: Choose Your Silhouette

• For a fitted look: select your usual women's size (e.g., women's small -> unisex XS or S)
• For a standard fit: go with your usual unisex size
• For an oversized look: go up 1-2 sizes (see the next section)

Step 5: Check the Size Chart

Our product pages include a size chart with specific chest, length, and sleeve measurements. Always check this before ordering. For example, our Unisex Crestwood Tee has a slightly shorter torso than other tees - the size chart shows this.

Common Mistake to Avoid

Don't assume all unisex shirts are the same - brands and cuts differ. Our store sources from multiple suppliers. Always look at the individual product size chart.

Tips for a Comfortable Oversized Look

Step 6: Go Up Two Sizes for the True Oversized Feel

If you want that cozy, baggy look that fans love for watching The OA marathons, order two sizes larger than your normal fit. For example, if you wear a Medium tee, order an XL. This gives you extra length in the body and sleeves without being unwearable.

Step 7: Consider the Fabric Weight

Oversized works best with heavier fabrics (6 oz or more). Lighter tees (4.5 oz) can look too flimsy when oversized. Our Premium Heavyweight Tees are 6.5 oz and drape beautifully when sized up.

Common Mistake to Avoid

Going oversized on a hoodie can make the sleeves too long. For hoodies, going up just one size gives the perfect comfortable fit without drowning in fabric.

How to Measure Yourself at Home

You Need: A flexible measuring tape and a flat surface.

Chest: Measure around the fullest part of your chest, keeping the tape horizontal. For a relaxed fit, add 2-4 inches to this number.

Length: Measure from the highest point of your shoulder (near the neck) down to where you want the shirt to end. Standard tees hit at the hip.

Sleeve: Measure from the center back of your neck, across the shoulder, and down to your wrist bone.

Pro Tip from the Community

Use a shirt you already own that fits perfectly as a reference. Lay it flat and measure its chest width and length. Compare those numbers to the size chart. This is the most reliable method.

Pro Tips from the Community

Tip 1: Wash Cold, Tumble Dry Low

To preserve the fit, always wash your The OA merch in cold water and tumble dry on low heat. High heat shrinks cotton unevenly.

Tip 2: Layer Strategically

Many fans wear their OA tees under flannels or denim jackets. If you plan to layer, order your tee true to size (not oversized) so it doesn't bunch up under another layer.

Tip 3: Read Reviews for Fit Notes

Other fans often leave reviews mentioning if an item runs large or small. For example, our Symbol Crewneck Sweatshirt tends to run a half-size small - community reviews will tell you to size up.

Tip 4: The Cuff Check

For hoodies and sweatshirts with ribbed cuffs, if the cuff feels tight on your wrist, that's a sign the sleeves are too short. Go up a size to avoid the 'bracelet' effect.

Recommended Gear & Products

If you're looking for the perfect fit, these three pieces are fan favorites:

• The OA Symbol Tee - Classic fit, 100% preshrunk cotton. Runs true to size. Great for both fitted and layered looks.
• Hap's Lab Pullover Hoodie - Relaxed fit, 8 oz fleece. Size down for snug, true to size for standard, size up for cozy.
• The OA Premium Heavyweight Tee - 6.5 oz fabric, slightly longer torso. Ideal for the oversized look (size up 2).

All products include detailed size charts. When in doubt, message us on the Contact page and we'll help you pick the right size.

Frequently Asked Questions About Sizing

Should I size up or down for unisex tees?

If you prefer a fitted look, size down from your usual unisex size. For a standard fit, order your normal unisex size. For oversized, go up 1-2 sizes depending on the desired looseness.

How do I know if a hoodie will shrink?

Most hoodies are preshrunk, but cotton blends can shrink up to 5% in length. To minimize shrinkage, wash in cold water and tumble dry low. Avoid high heat.

What if I'm between sizes on the size chart?

If your chest measurement falls between two sizes, choose the larger size for a comfortable fit, especially if you prefer roomy clothing. You can also base the decision on length: if you're tall, go larger for more length.

Can I exchange my merch if it doesn't fit?

Yes, we offer hassle-free exchanges. Visit the Contact page to start the process. We accept unworn items within 30 days of delivery.

Is the sizing the same for all OA merch?

No. Sizing can vary between different product types (tees vs hoodies) and even between specific designs due to different blank brands used. Always refer to the size chart on the product page.