THIRD GEAR SOCIETY / SIZE GUIDE
Find Your Fit.
Check the measurements. Find your size. Wear your obsession. Compare a garment you already own with the matching chart below.
T-Shirt Size Chart
US size labels · Measurements in inches
Select a size to highlight its row. Swipe across the table on smaller screens.
| US Size | Flat Width (in) | Length (in) | Sleeve Length (in) | Size Tolerance (in) |
|---|---|---|---|---|
| 16.00 | 27.00 | 7.99 | 1.50 | |
| 18.00 | 28.00 | 8.23 | 1.50 | |
| 20.00 | 29.00 | 8.50 | 1.50 | |
| 22.00 | 30.00 | 8.74 | 1.50 | |
| 24.00 | 31.00 | 9.02 | 1.50 | |
| 26.00 | 32.00 | 9.25 | 1.50 | |
| 28.00 | 33.00 | 9.49 | 1.50 | |
| 30.00 | 34.00 | 9.72 | 1.50 | |
| 32.00 | 35.00 | 9.96 | 1.50 |
Hoodie Size Chart
US size labels · Measurements in inches
Select a size to highlight its row. Swipe across the table on smaller screens.
| US Size | Flat Width (in) | Length (in) | Sleeve Length from Center Back (in) | Size Tolerance (in) |
|---|---|---|---|---|
| 20.08 | 27.17 | 33.50 | 1.50 | |
| 22.05 | 27.95 | 34.50 | 1.50 | |
| 24.02 | 29.13 | 35.50 | 1.50 | |
| 25.98 | 29.92 | 36.50 | 1.50 | |
| 27.99 | 31.10 | 37.50 | 1.50 | |
| 29.92 | 31.89 | 38.50 | 1.50 | |
| 31.89 | 33.07 | 39.50 | 1.50 | |
| 33.86 | 33.86 | 40.50 | 1.50 |
Hoodie sleeve measurement: Measured from the center back of the neckline, across the shoulder, and down to the sleeve cuff. This differs from the T-shirt sleeve measurement.
Showing T-shirt measurements in inches.
How to measure
- Lay your garment flat. Use a similar T-shirt or hoodie that fits you well. Smooth the fabric without stretching it.
- Width: Measure straight across from underarm to underarm. This is flat garment width, not body circumference.
- Length: Measure from the top of the shoulder beside the neckline to the bottom hem. Follow any more specific measuring instructions on the product page.
- T-shirt sleeves: Measure from the shoulder seam to the sleeve opening.
- Hoodie sleeves: Start at the center back of the neckline. Measure across the shoulder and down the sleeve to the cuff.
International sizing and unit conversions
Select CM to view the supplied metric measurements for either chart. Select IN to return to inches.
One inch equals 2.54 centimeters. These charts use the supplier’s published values in both units, so small rounding differences may occur.
UK, EU, Australian, and Japanese clothing size labels vary by brand and garment. Compare the measurements instead of assuming a direct country-specific size equivalent.
What does size tolerance mean?
Both supplied charts list a size tolerance of 1.50 inches / 3.81 centimeters for each size. Finished garment measurements may vary.
Use the chart as a guide and consider this variation when comparing measurements.
Will the same size fit the same across both styles?
T-shirts and hoodies have different measurements. Check each chart separately, even if you normally wear the same size in both.
Compare with a similar garment you own and check the product description for fit details. These charts apply only to products using the listed measurements.
Let’s find your fit.
Send us the product name and the size you’re considering before placing your order.