Size Guide
Every THIRTXXN piece is built to our own spec. Find your fit below using our official garment measurements, in inches or centimeters.
Men's Tees
All measurements are approximate. Garments may vary by up to 1″ (2.5cm), which is within standard manufacturing tolerance.
How To Measure
Lay it flat
Place a tee or hoodie that fits you well on a flat surface, front side up, with sleeves and hem smoothed out.
Measure width
Measure straight across the chest, about 1″ below the armhole, from one side seam to the other.
Measure length
Measure from the highest point of the shoulder seam straight down to the bottom hem.
Fit Notes
- Signature Tee & Core Logo Tee, along with the Signature Dropcut Tee, run true to size in a regular fit — size up for a looser, oversized look.
- Human Being Tee is a boxy, relaxed fit with dropped shoulders — already oversized, so most people size true-to-size or even down.
- Core Logo Hoodie & Human Being Hoodie are cut unisex — one set of measurements for everyone. Both run relaxed and oversized with a dropped shoulder, so size down if you prefer a slimmer silhouette.
- Snapback hats are one size, adjustable, with a deeper crown for a slightly oversized, elevated fit.
The THIRTXXN Standard
Every THIRTXXN piece is built to our own construction spec — premium fabrics, consistent fit, true to size across every drop. Measurements shown here are taken directly from our production samples for each style.
Still Unsure Of Your Size?
Reach out and we'll help you find the right fit before you order.
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