Size Guides

Size Guides

Every great adventure starts with the correct garment in the correct size. Use our easy to understand size guides below to ensure you're fully prepared with the correct First Ascent garment size for your next outdoor adventure.

Size Chart, Measuring and Fit Guide

First Ascent apparel is technically designed to provide you with the best fit for comfort and performance.  It is very important to wear a correctly size product for your body size to ensure maximum comfort. Please read through our measuring guide and see appropriate size charts below for your product.

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Ladies
Men's
Fit Guide
How to Measure

Ladies Size Chart

*Measure your waist at the narrowest point
**Measure your hips at the widest point
Size XS S M L XL 2XL
Chest (cm) 78-84 84-90 90-98 98-106 106-114 114-122
Waist (at narrowest) (cm) 60-66 66-72 72-80 80-88 88-96 96-104
Hip (at widest) (cm) 84-90 90-96 96-104 104-112 112-120 120-128
Sleeve over arm (cm) 72 74 76 78 80 82
Leg Inseam (cm) 79-82
Leg Inseam (in) 31-32

Men's Size Chart

*Measure your waist at the narrowest point
**Measure your hips at the widest point
Size XS S M L XL 2XL 3XL 4XL 5XL
Chest 84-90 90-96 96-104 104-112 112-120 122-130 132-140 142-150 152-160
Waist* 69-75 75-81 81-89 89-97 97-105 107-115 117-125 127-135 137-145
Hip** 84-90 90-96 96-104 104-112 112-120 122-130 132-140 142-150 152-160
Sleeve over arm 76 78 80 82 84 86.5 89 91.5 94
Leg Inseam (cm) 80-84
Leg Inseam (in) 31-33

MEASURING GUIDE:

ACHEST

Measure around the fullest part, across chest points, keeping the tape horizontal.

BSLEEVE

With elbow bent, measure from the center (back) of neck to elbow and down to wrist.

CWAIST

Measure around the narrowest part (typically the small of your back and where your body bends side to side), keeping the tape horizontal.

DHIP

Measure around the fullest part of your hips keeping the tape horizontal.

ELEG IN-SEAM

Measure from the crotch to bottom of the leg.

Ladies Size Measuring

See which fit matches this product

Each of our products are designed and shaped specifically for its intended use.

As our products are technically designed, it is very important that the product fits you accordingly. We categorise our products into four general fit types.

Athletic Fit

Conforms to the body’s contours.

Slim Fit

Closer-fitting. Slim-fitting technical garments may be worn over baselayers and light midlayers.

Regular Fit

Neither slim nor oversized. Regular-fitting technical garments may be worn over heavier midlayers.

Relaxed Fit

Drapes loosely on the body.

Expedition Fit

A very loose fit that is designed to be worn over insulating jackets and baselayers.

JUNIOR SIZE CHART (cm)

3-4 yrs 5-6 yrs 7-8 yrs 9-10 yrs 11-12 yrs 13-14 yrs
Extra small Small Medium Large Extra large Extra X Large
Chest 49.5-54.5 55-59.5 60-64.5 65-69.5 70-74.5 75-79.5
Waist 41.5-46.5 47-51.5 52-56.5 57-61.5 62-66.5 67-71.5
Hip 57.5-62.5 63-67.5 68-72.5 73-77.5 78-82.5 83-87.5
Length 105 120 130 140 150 165

SHOE SIZE CHART (cm)

SHOE SIZE UK4 UK5 UK6 UK7 UK8 UK9 UK10 UK11 UK12 UK13
Foot length 23.5 24.2 24.9 25.5 26.2 26.9 27.5 28.2 28.9 29.5