Skip to content

Fit and sizing

Gusseted crotch

Also called crotch gusset, diamond gusset

What is a gusseted crotch?

A gusseted crotch is an extra diamond or triangle of fabric sewn into hiking pants so four seams do not meet at a single point. It spreads the load of a high step across several seams, which is why gusseted pants do not bind or split at the crotch.

Gusseted crotch at a glance

What it is
An extra fabric panel set into the crotch
What it fixes
Binding and splitting on a high step
Where to find it
Turn the garment inside out
Also common on
Climbing pants, base layers, bib shorts

The problem a gusset solves

In ordinary trousers, the inseam of each leg, the rise at the front and the rise at the back all converge on one point. Every time you lift a knee high, the fabric around that junction is pulled tight from four directions at once.

You feel that as the pant grabbing you halfway through a step onto a rock, and it is also where cheap trousers eventually split. Neither is a fabric failure. It is geometry.

How the gusset changes it

A gusset replaces that single junction with a separate panel, usually a diamond or a pair of triangles, sewn in between the legs. The load of a high step now spreads across several seams and a larger area of fabric.

The practical effect is that the pant simply does not reach the end of its travel during a normal hiking stride, so the waistband stays put and the cuff does not ride up your boot.

Why it beats stretch content

Elastane helps, and it is not a substitute. A badly patterned pant with four percent elastane still binds, because stretch only postpones the moment the seams run out of slack. A well-cut pant with a gusset and very little stretch moves fine.

This is why a gusset is a reliable way to tell a garment designed for walking from one designed to look like it was. It costs a manufacturer very little, it is invisible on a hanger, and the pants that skip it are almost always the ones styled for the outdoors rather than built for it.

How to check for one

Turn the pants inside out and look between the legs. A gusseted pair shows a distinct panel with its own seams around it; an ungusseted pair shows four seams running into one point.

If you are in a changing room, make a deliberately exaggerated high step and a deep squat instead. If anything grabs at the crotch or drags the waistband down at the back, the pattern is wrong for you whatever the label says.

What this means when you're choosing

  • A distinct diamond or triangular panel between the legs when the pants are inside out
  • Articulated or darted knees, which almost always come on the same pants
  • Whether a high step pulls the waistband down at the back
  • Whether the cuff rides up over your boot when you bend the knee

The common mistake

Trusting stretch content instead of the pattern

Elastane in the fabric does not fix a crotch where four seams meet at a point. Plenty of stretchy outdoor-styled pants still bind on a high step, and they are the ones that split there too.

Common questions

Do all hiking pants have a gusseted crotch?

No, and it is the most common thing missing from pants that look technical but are not. Turn a pair inside out before buying: a gusset shows as a distinct panel between the legs, while an ungusseted pair has four seams running into one point.

Does a gusset make pants more durable?

Yes, at the place they most often fail. Spreading the load of a high step across several seams instead of concentrating it on one junction is what stops the crotch blowing out, which is where trousers without a gusset usually go first.

Where this comes up

Guides on Tom's Hiking where gusseted crotch changes which product is right for you.

More in fit and sizing

Torso length

Torso length is the distance from the bony bump at the base of your neck down to the top of your hip bones. It's the measurement backpack sizes are built around, and it has almost nothing to do with how tall you are.

Iliac crest

The iliac crest is the curved top edge of your pelvis, the ridge you feel when you put your hands on your hips. It's the shelf a backpack hipbelt sits on, and the lower anchor point for measuring torso length.

Last

A last is the foot-shaped mould a shoe or boot is built around. It sets the width, the volume, the shape of the toe box and the heel cup, which is why two pairs in the same size from different brands can fit completely differently.

Toe box

The toe box is the front of a shoe, from roughly the ball of the foot forward. Its width and height decide whether your toes can splay under load, which is what stops black toenails and blisters on long descents.

Surgeon's knot

A surgeon's knot is a lacing trick where you wrap the laces twice instead of once before pulling tight. The extra wrap holds tension in place, letting you lock your heel down while leaving the toe box loose.

Short liner

A short liner is the brief, boxer or compression layer sewn inside running shorts and worn instead of underwear. Its cut is what decides whether long runs chafe: a brief covers little, a boxer liner reaches the inner thigh, and a 2-in-1 anchors to the shell so it cannot ride up.

Inseam

Inseam is the length of a garment's inner leg seam, measured from the crotch to the hem, and it is how running shorts are sized. Trail shorts run from about three inches to nine, and five to seven covers most trail running.

Chafing

Chafing is skin worn raw by repeated friction, usually where wet fabric rubs skin or skin rubs skin over hours. On a run it starts at the inner thigh, and dried sweat leaves abrasive salt behind that makes it considerably worse.

Last reviewed . Back to the glossary