Size Chart

Find your perfect fit with our carefully measured size guide. Please note that measurements are approximate and may vary slightly. We recommend measuring yourself and comparing with the chart below for the best fit.


Tank Top Size (Measured in cm)

Size Chest Width Body Length Strap Width
Medium 44 cm 67 cm 25.5 cm
Large 46 cm 69 cm 26.5 cm
X-Large 50 cm 72 cm 27.5 cm


Boxer-Brief Size (Measured in inches)

Size Waist 
Small 29-31 in
Medium 33-35 in
Large 35-38 in
X-Large 38-40 in


Shirts Size Guide

Slim Fit T-Shirts (Measured in inches)

Size  Shoulder  Chest  Sleeve  Arm Opening Length
Medium 18 in 20 in 9 in 6.5 in 28 in
Large 19.5 in 22 in 9.5 in 7.5 in 29.5 in
X-Large 20 in 23 in 10 in 8 in 30.5 in
2X-Large 21 in 25 in 10 in 8.5 in 31 in


Drop Shoulder T-Shirts (Measured in inches)

Size Shoulder Chest Sleeve Arm Opening Length
Medium 21.7 in 23.2 in 8.7 in 6.5 in 28.7 in
Large 22.4 in 24.0 in 8.9 in 7.5 in 29.5 in
X-Large 23.2 in 24.8 in 9.1 in 8 in 30.3 in
2X-Large 23.6 in 25.6 in 9.3 in 8.5 in 31.1 in

How to Measure for the Perfect Fit

  • Chest: Measure around the fullest part of your chest, keeping the tape parallel to the floor.
  • Shoulders: Measure from one shoulder seam to the other across the back.
  • Sleeve Length: Measure from the shoulder seam down to the sleeve opening.
  • Waist (Boxers): Measure around your natural waistline where you normally wear your underwear.

For the best fit, compare these measurements with your favorite garments.

Need more help? Contact us at support@sosamartin.com for sizing assistance.