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Perfect Fit Guarantee
Size Guide
Our fabric has natural stretch. Choose your size by actual waist and hip measurements.
Between sizes or prefer a snug fit? We recommend sizing down.
How to Measure
Measure your waist and hips, then match both numbers to the chart below. If one measurement sits between sizes, choose based on the fit you prefer.
Step 1
Measure Your Waist
Wrap a soft tape measure around your natural waist. Keep it level and comfortably snug, not tight.
Step 2
Measure Your Hips
Measure around the fullest part of your hips and seat while standing naturally.
Step 3
Match Your Fit
Use your actual measurements first. Between sizes or prefer a snug fit? We recommend sizing down.
Underwear Size Chart
Measurements are shown in inches by default. Tap the unit switch to view the same waist and hip ranges in centimeters.
| Size | Waist | Hips |
|---|---|---|
| S | 28–31 in | 32–36 in |
| M | 32–35 in | 37–40 in |
| L | 36–39 in | 41–44 in |
| XL | 40–43 in | 45–48 in |
| XXL | 44–47 in | 49–52 in |
Tip: For the most accurate fit, measure directly on your body and avoid pulling the tape too tight.
Find Your Style
Three distinct fits engineered for different moments in your day.
Zero-G™ Elite Boxer Brief
Mid-thigh length with a supportive fit and our signature Zero-G Pod™ pouch for weightless comfort.
Best for: Active days, workouts, all-day wear
Zero-G™ Elite Trunk
Short-length, modern cut with Zero-G Pod™ pouch. Sits higher on the thigh for a clean silhouette.
Best for: Slim-fit pants, shorter inseams
Relaxed Fit Knit Boxer
Loose through the thigh, breathable cotton with a classic button fly. Maximum airflow.
Best for: Sleeping, lounging, weekend relaxation
Fit Tips
✓
Choose your size by your actual waist and hip measurements first. If you are between sizes or prefer a snug fit, we recommend sizing down.
✓
Our fabric has natural stretch, so it moves with your body without needing to size up.
✓
The fabric-encased waistband is designed to sit securely without digging in.
Still Not Sure?
Send us your waist and hip measurements — our team will help you find the right Kingbriefs fit.
Contact UsRisk-Free First Pair Guarantee — If it doesn't fit, we'll exchange or refund. No questions asked.
