Size Guide
Find Your Perfect Fit 🍀
Our short sleeve t-shirts are a classic unisex fit - soft, comfy, and true to size.
They’re straight cut (not tailored or fitted), so they suit everyone. If you prefer a looser fit in a short sleeve, we recommend sizing up. For a snugger fit, size down.
Our long sleeve tees use the same unisex sizing but have a more relaxed, classic feel.
They’re made from a slightly heavier fabric with a roomier cut through the body and arms - perfect for layering or that easy, throw-on comfort. Long sleeve shirts do not need sizing up. If you prefer a snugger fit, consider sizing down.
We want every Happy Out tee to feel like an old favourite from the very first wear. The best way to make that happen? Take a quick measurement before you order.
Every brand sizes a little differently, so don’t rely on the label in your drawer. Grab a shirt you already love, measure it, and compare it to our chart below. A minute now saves waiting for an exchange later — and means you’ll be showing off your new tee sooner ☘️
- Grab your favorite tee.
- Lay it flat on a table.
- Measure across the chest (width).
- Measure from shoulder to hem (length).
- Match your measurements to our chart below.
(Tip: Measurements may vary by up to 1 inch as each shirt is hand-finished.)

Still Unsure?
Please don’t hesitate to contact us if you’re still unsure about sizing - we’ll be happy to help you pick the right fit.