Monthly Men's Underwear Subscription

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RUTZ Fit System

Size Guide

Find your best fit for performance underwear and active essentials built for long days outside.

Fit tip: Our fabric is stretchy. If you are between sizes or want a more supportive fit, we recommend sizing down.

6" inseam

Measurements in inches

Measure around your most natural waistline.

Measure around the widest part of your butt.

Measure from the crotch to the bottom of the hem.

Measurements in inches

Supportive active fit

Measurements in inches

Measure around your most natural waistline.

Measure around the widest part of your butt.

Measure around the fullest part of your chest.