Nailing the right trouser size is about more than one number on a waistband. There are four things at play: fit, rise, leg shape and leg length - and once you know what each one means, finding your perfect pair gets a lot easier.

Fit is the overall amount of room a trouser gives you, from close-cut and streamlined right through to roomy and relaxed.

Rise is where the waistband sits - low, mid or high - and it changes how a trouser feels when you're bending, stretching or hauling a pack on.

Leg Shape describes the cut from hip to hem: straight, tapered, curved, wide or barrel-shaped, each moving with the body in a different way.

Leg Length, sometimes called the inside leg or inseam, is simply the measurement from crotch to hem - the difference between trousers that skim your boots and trousers you're forever rolling up.

Combine all four and you've got a fit that's actually built for what you're doing in it, not just what fits off the peg.

Our most versatile, true-to-size fit. Regular sits close enough to feel put-together but never restrictive - the one to reach for if you're not sure where to start.

Regular Straight Leg
Cut with a straight leg and a true-to-size fit through the hip and thigh. A clean, classic line that works from city to trailhead.

Regular Curved Leg
Cut with a gentle curve through the leg for a fit that follows your natural shape. A great choice if you find straight-leg styles gape at the waist or hang oddly through the thigh.

Extra room through the hips and thighs, for days spent on the move scrambling over stiles, or settling into a camp chair.

Relaxed Straight Leg
Cut with extra room through the hip and thigh, falling straight to the hem. Ideal if you're layering up base layers underneath, or simply prefer a looser, more forgiving fit that doesn't cling.

Relaxed Barrel Leg
Cut with a rounded, curved leg that tapers in slightly at the ankle. The barrel shape gives you room to roam through the leg while still looking pulled-together at the hem — a good middle ground between relaxed and loose.

Relaxed Wide Leg
Cut with extra room throughout for a wide, floaty leg line. Choose this one for maximum air-flow and movement, or if you love a laid-back style that wears easy.

Loose
Cut generously throughout for maximum room and easy movement. Made for slow days, festival fields, or lounging round camp after a big day on the trails.

Fitted Leggings
Cut close to the leg for a slim, streamlined shape. The one to grab when you want freedom of movement without excess fabric getting in the way. Also great for layering underneath ski pants or other active trousers when the temperature drops.

Regular Straight Leg
Cut with a straight leg and a true-to-size fit through the hip and thigh. Our go-to shape - not too slim, not too roomy, just a solid, straightforward fit that works everywhere from the pub to the peak.

All our Mens Regular Fit Trousers have a straight leg so we tend to just call them Regular in product descriptions.

Relaxed Straight Leg
Cut with extra room through the hip and thigh, falling straight to the hem. Go relaxed if you want more room to move, plan on layering thermals underneath, or just prefer your trousers a little less snug.

All our Mens Relaxed Fit Trousers have a straight leg so we tend to just call them Relaxed in product descriptions.

Fitted Base Layers
Cut close to the leg for a slim, streamlined shape. Designed to sit close to the skin under other layers without adding bulk: the foundation of any cold-weather kit list.