Skip to content

Cart

YOUR CART IS CURRENTLY EMPTY
New Arrivals Tracksuits Short Sets
MONTERRAIN DIVIDE TRACKSUIT - FORT BLUE / TWILIGHT
MONTERRAIN DIVIDE TRACKSUIT - FORT BLUE / TWILIGHT
Regular price €182.95
€182.95
View options
MONTERRAIN SPEED 4.0 TRACKSUIT - BLACK
MONTERRAIN SPEED 4.0 TRACKSUIT - BLACK
Regular price €145.95
€145.95
View options
MONTERRAIN SPEED 4.0 POLY FLEECE JOGGER - BLACK
MONTERRAIN SPEED 4.0 POLY FLEECE JOGGER - BLACK
Regular price €68.95
€68.95
View options
MONTERRAIN SPEED 4.0 POLY FLEECE JACKET - BLACK
MONTERRAIN SPEED 4.0 POLY FLEECE JACKET - BLACK
Regular price €77.95
€77.95
View options
MONTERRAIN DIVIDE WOVEN RUNNING PANT - FORT BLUE / TWILIGHT
MONTERRAIN DIVIDE WOVEN RUNNING PANT - FORT BLUE / TWILIGHT
Regular price €89.95
€89.95
View options
ENVI HYBRID JACKET - BABY BLUE
ENVI HYBRID JACKET - BABY BLUE
Regular price€150.00 €128.95
€128.95
View options
ENVI HYBRID JACKET - KHAKI GREEN
ENVI HYBRID JACKET - KHAKI GREEN
Regular price€150.00 €128.95
€128.95
View options
ENVI HYBRID JACKET - GREY
ENVI HYBRID JACKET - GREY
Regular price€150.00 €128.95
€128.95
View options
ENVI HYBRID JACKET - BLACK
ENVI HYBRID JACKET - BLACK
Regular price€150.00 €128.95
€128.95
View options
ENVI DRIFT PUFFER JACKET - LIGHT GREY / DARK SHADOW
ENVI DRIFT PUFFER JACKET - LIGHT GREY / DARK SHADOW
Regular price €159.95
€159.95
View options
ENVI DRIFT PUFFER JACKET - BLACK
ENVI DRIFT PUFFER JACKET - BLACK
Regular price €159.95
€159.95
View options
ENVI AERO LITE HYBRID JACKET - NAVY/GREY
ENVI AERO LITE HYBRID JACKET - NAVY/GREY
Regular price€145.00 €138.95
€138.95
View options
ENVI AERO LITE HYBRID JACKET - DARK GREY/BLACK
ENVI AERO LITE HYBRID JACKET - DARK GREY/BLACK
Regular price€145.00 €138.95
€138.95
View options
ENVI AERO LITE HYBRID JACKET - BLACK/LIGHT GREY
ENVI AERO LITE HYBRID JACKET - BLACK/LIGHT GREY
Regular price€145.00 €138.95
€138.95
View options
ENVI AERO LITE HYBRID JACKET - GREY/BLACK
ENVI AERO LITE HYBRID JACKET - GREY/BLACK
Regular price€145.00 €138.95
€138.95
View options
ENVI AERO LITE HYBRID JACKET - BABY BLUE/LIGHT GREY
ENVI AERO LITE HYBRID JACKET - BABY BLUE/LIGHT GREY
Regular price€145.00 €138.95
€138.95
View options
ENVI TECH FLEECE PANT - BLACK/LIGHT GREY
ENVI TECH FLEECE PANT - BLACK/LIGHT GREY
Regular price €69.95
€69.95
View options
ENVI TECH T SHIRT - BLACK/LIGHT GREY
ENVI TECH T SHIRT - BLACK/LIGHT GREY
Regular price €44.95
€44.95
View options
ENVI TECH T SHIRT - WHITE/DARK GREY
ENVI TECH T SHIRT - WHITE/DARK GREY
Regular price €44.95
€44.95
View options
ENVI TECH FLEECE JACKET - BLACK/LIGHT GREY
ENVI TECH FLEECE JACKET - BLACK/LIGHT GREY
Regular price €85.95
€85.95
View options
ENVI TECH FLEECE PANT - LIGHT GREY/DARK GREY
ENVI TECH FLEECE PANT - LIGHT GREY/DARK GREY
Regular price €69.95
€69.95
View options
ENVI TECH FLEECE JACKET - LIGHT GREY/DARK GREY
ENVI TECH FLEECE JACKET - LIGHT GREY/DARK GREY
Regular price €85.95
€85.95
View options
ENVI TECH FLEECE PANT - STORM BLUE/GREY
ENVI TECH FLEECE PANT - STORM BLUE/GREY
Regular price €69.95
€69.95
View options
ENVI TECH T SHIRT - STORM BLUE/GREY
ENVI TECH T SHIRT - STORM BLUE/GREY
Regular price €44.95
€44.95
View options
ENVI TECH FLEECE JACKET - STORM BLUE/GREY
ENVI TECH FLEECE JACKET - STORM BLUE/GREY
Regular price €85.95
€85.95
View options
ENVI TECH FLEECE TRACKSUIT - BLACK/LIGHT GREY
ENVI TECH FLEECE TRACKSUIT - BLACK/LIGHT GREY
Regular price €154.95
€154.95
View options
ENVI TECH FLEECE TRACKSUIT - STORM BLUE/GREY
ENVI TECH FLEECE TRACKSUIT - STORM BLUE/GREY
Regular price €154.95
€154.95
View options
ENVI TECH FLEECE TRACKSUIT - LIGHT GREY/DARK GREY
ENVI TECH FLEECE TRACKSUIT - LIGHT GREY/DARK GREY
Regular price €154.95
€154.95
View options
MONTERRAIN DINAR 3.0 HYBRID PUFFER JACKET - BLACK/LAVA RED
MONTERRAIN DINAR 3.0 HYBRID PUFFER JACKET - BLACK/LAVA RED
Regular price €88.95
€88.95
View options
MONTERRAIN DINAR 3.0 RUNNING PANT - BLACK/LAVA RED
MONTERRAIN DINAR 3.0 RUNNING PANT - BLACK/LAVA RED
Regular price €78.95
€78.95
View options
MONTERRAIN SPEED 4.0 POLY FLEECE JOGGER - GREY
MONTERRAIN SPEED 4.0 POLY FLEECE JOGGER - GREY
Regular price €68.95
€68.95
View options
MONTERRAIN SPEED 4.0 POLY FLEECE HOODIE - GREY
MONTERRAIN SPEED 4.0 POLY FLEECE HOODIE - GREY
Regular price €74.95
€74.95
View options
TRAILBERG OBERLAND T SHIRT - ASH GREY / MELON SORBET
TRAILBERG OBERLAND T SHIRT - ASH GREY / MELON SORBET
Regular price €41.95
€41.95
View options
TRAILBERG OBERLAND PANT - ASH GREY / MELON SORBET
TRAILBERG OBERLAND PANT - ASH GREY / MELON SORBET
Regular price €79.95
€79.95
View options
TRAILBERG OBERLAND HOOD - ASH GREY / MELON SORBET
TRAILBERG OBERLAND HOOD - ASH GREY / MELON SORBET
Regular price €82.95
€82.95
View options
MONTERRAIN DINAR 3.0 HYBRID TRACKSUIT - BLACK/LAVA RED
MONTERRAIN DINAR 3.0 HYBRID TRACKSUIT - BLACK/LAVA RED
Regular price €165.95
€165.95
View options
MONTERRAIN SPEED 4.0 POLY FLEECE TRACKSUIT - GREY
MONTERRAIN SPEED 4.0 POLY FLEECE TRACKSUIT - GREY
Regular price €145.95
€145.95
View options
TRAILBERG OBERLAND 3-PIECE OUTFIT - ASH GREY / MELON SORBET
TRAILBERG OBERLAND 3-PIECE OUTFIT - ASH GREY / MELON SORBET
Regular price €199.95
€199.95
View options
TRAILBERG OBERLAND TRACKSUIT - ASH GREY / MELON SORBET
TRAILBERG OBERLAND TRACKSUIT - ASH GREY / MELON SORBET
Regular price €157.95
€157.95
View options
TRAILBERG RAPID DASH TRACKSUIT - BLACK / GRAPHITE GREY
TRAILBERG RAPID DASH TRACKSUIT - BLACK / GRAPHITE GREY
Regular price€155.00 €148.95
€148.95
View options
TRAILBERG RAPID DASH 3.0 PANT - BLACK / GRAPHITE
TRAILBERG RAPID DASH 3.0 PANT - BLACK / GRAPHITE
Regular price €71.95
€71.95
View options
TRAILBERG RAPID DASH 3-PIECE OUTFIT - BLACK / GRAPHITE GREY
TRAILBERG RAPID DASH 3-PIECE OUTFIT - BLACK / GRAPHITE GREY
Regular price€195.00 €187.95
€187.95
View options
MONTERRAIN BEACON 2.0 PUFFER JACKET - FORGED STEEL
MONTERRAIN BEACON 2.0 PUFFER JACKET - FORGED STEEL
Regular price €147.95
€147.95
View options
MONTERRAIN BEACON 2.0 PUFFER JACKET - BLACK
MONTERRAIN BEACON 2.0 PUFFER JACKET - BLACK
Regular price €147.95
€147.95
View options
MONTERRAIN DINAR 3.0 PANT - FORGED STEEL
MONTERRAIN DINAR 3.0 PANT - FORGED STEEL
Regular price €78.95
€78.95
View options
MONTERRAIN DINAR 3.0 HYBRID PUFFER JACKET - FORGED STEEL
MONTERRAIN DINAR 3.0 HYBRID PUFFER JACKET - FORGED STEEL
Regular price €88.95
€88.95
View options
MONTERRAIN DINAR 3.0 TRACKSUIT - GREY/BLUE
MONTERRAIN DINAR 3.0 TRACKSUIT - GREY/BLUE
Regular price €163.95
€163.95
View options
Saucony ProGrid Triumph 4 Trainer - Black / Naval from DripModa
SAUCONY PROGRID TRIUMPH 4 TRAINER - BLACK / NAVAL
Regular price €186.95
€186.95
View options
BERGHAUS WAVERTREE TRACKSUIT - DARK GREY
BERGHAUS WAVERTREE TRACKSUIT - DARK GREY
Regular price €190.95
€190.95
View options
BERGHAUS GREENBANK TRACKSUIT - GARBO GREY
BERGHAUS GREENBANK TRACKSUIT - GARBO GREY
Regular price €220.95
€220.95
View options

  • Shop All
    • Bestsellers
    • New Arrivals
  • Shop By Brand
    • Cleens
    • Berghaus
    • Envi
    • Monterrain
    • Nike
    • Saucony
    • Trailberg
    • Under Armour
  • Shop By Style
    • Tracksuits
    • Jackets
    • Headwear
    • Sets
    • Tees
    • Shorts
    • Footwear
  • Shop By Size
  • Our Story
  • Returns
  • Contact
  • Austria (EUR €)
  • Belgium (EUR €)
  • Bulgaria (EUR €)
  • Croatia (EUR €)
  • Cyprus (EUR €)
  • Czechia (CZK Kč)
  • Denmark (DKK kr.)
  • Estonia (EUR €)
  • Faroe Islands (DKK kr.)
  • Finland (EUR €)
  • France (EUR €)
  • Germany (EUR €)
  • Gibraltar (GBP £)
  • Greece (EUR €)
  • Guernsey (GBP £)
  • Hungary (HUF Ft)
  • Iceland (ISK kr)
  • Ireland (EUR €)
  • Isle of Man (GBP £)
  • Italy (EUR €)
  • Jersey (EUR €)
  • Latvia (EUR €)
  • Lithuania (EUR €)
  • Luxembourg (EUR €)
  • Malta (EUR €)
  • Monaco (EUR €)
  • Netherlands (EUR €)
  • Norway (EUR €)
  • Poland (PLN zł)
  • Portugal (EUR €)
  • Romania (RON Lei)
  • Serbia (RSD РСД)
  • Slovakia (EUR €)
  • Slovenia (EUR €)
  • Spain (EUR €)
  • Sweden (SEK kr)
  • Switzerland (CHF CHF)
  • United Kingdom (GBP £)
  • Log in
  • Shop All
    • Bestsellers
    • New Arrivals
  • Shop By Brand
    • Cleens
    • Berghaus
    • Envi
    • Monterrain
    • Nike
    • Saucony
    • Trailberg
    • Under Armour
  • Shop By Style
    • Tracksuits
    • Jackets
    • Headwear
    • Sets
    • Tees
    • Shorts
    • Footwear
  • Shop By Size
  • Our Story
  • Returns
  • Contact
Authentic Ireland ™
  • Austria (EUR €)
  • Belgium (EUR €)
  • Bulgaria (EUR €)
  • Croatia (EUR €)
  • Cyprus (EUR €)
  • Czechia (CZK Kč)
  • Denmark (DKK kr.)
  • Estonia (EUR €)
  • Faroe Islands (DKK kr.)
  • Finland (EUR €)
  • France (EUR €)
  • Germany (EUR €)
  • Gibraltar (GBP £)
  • Greece (EUR €)
  • Guernsey (GBP £)
  • Hungary (HUF Ft)
  • Iceland (ISK kr)
  • Ireland (EUR €)
  • Isle of Man (GBP £)
  • Italy (EUR €)
  • Jersey (EUR €)
  • Latvia (EUR €)
  • Lithuania (EUR €)
  • Luxembourg (EUR €)
  • Malta (EUR €)
  • Monaco (EUR €)
  • Netherlands (EUR €)
  • Norway (EUR €)
  • Poland (PLN zł)
  • Portugal (EUR €)
  • Romania (RON Lei)
  • Serbia (RSD РСД)
  • Slovakia (EUR €)
  • Slovenia (EUR €)
  • Spain (EUR €)
  • Sweden (SEK kr)
  • Switzerland (CHF CHF)
  • United Kingdom (GBP £)
  • 0
Shop All
Shop By Brand
Shop By Style
Shop By Size
Our Story
Returns
Contact
Authentic Ireland ™
Search 0 Cart

Size Guide

We stock a wide range of brands, and almost all of them follow standard UK sizing. Use the options below to view our clothing or footwear size guide. If a specific product fits differently, this will be noted on the product page.

How to use the clothing guide

Measure yourself with a soft tape and match your measurements to the closest size below. If you fall between two sizes, we recommend sizing up for a relaxed fit or choosing the smaller size for a closer fit.


Men's Clothing Size Chart

Swipe sideways to view the full chart →

Size Chest (inches) Chest (cm) Waist (inches) Waist (cm)
XS 34–36 86–91 28 71
S 36–38 91–96 30 76
M 38–40 96–101 32 81
L 40–42 101–106 34 86
XL 42–44 106–112 36 91
XXL 44–46 112–117 38 96

How to Measure Clothing

Chest

Measure around the fullest part of your chest, keeping the tape under your arms and level across your back. Keep the tape snug but not tight.

Waist

Measure around your natural waistline, roughly level with your belly button. Keep the tape comfortably loose rather than pulled in.


Fit & Brand Notes

  • The vast majority of our brands follow standard UK sizing, so the chart above will apply to almost everything you order.
  • A small number of styles are designed with a slim, oversized or relaxed fit. Where this is the case, it will be mentioned in the product description.
  • Measurements are intended as a general guide. Individual fit can vary slightly between brands and garment types.
  • If you are between two sizes, size up for a more relaxed fit or down for a closer fit.

How to use the footwear guide

Our footwear is displayed in UK sizes. Use the chart to compare UK, US and EU sizes and check the corresponding foot length. As sizing can vary slightly between brands and styles, always check the individual product description where available.


Footwear Size Chart

Swipe sideways to view more shoe sizes →

US—Men 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14
US—Women 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5
UK 3 3.5 4 4.5 5 5.5 6 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13
CM/JP 22.5 23 23.5 23.5 24 24 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 30 30.5 31 31.5 32
EU 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48 48.5
Foot length (in.) 8 1/2 8 11/16 8 13/16 9 9 3/16 9 5/16 9 1/2 9 11/16 9 13/16 10 10 3/16 10 5/16 10 1/2 10 11/16 10 13/16 11 11 3/16 11 5/16 11 1/2 11 11/16 11 13/16 12

Please note: the CM/JP size shown on some shoe labels may differ from the measured foot length in centimetres.


How to Measure Foot Length

  1. Tape a piece of paper to a hard, flat floor so it cannot move.
  2. Stand on the paper with your weight evenly balanced.
  3. Mark the tip of your longest toe and the outermost point of your heel.
  4. Step off the paper and measure the distance between the two marks.
  5. Repeat the process with your other foot, as one foot may be slightly longer.
  6. Use the longer measurement when checking the chart. If you are between sizes, we recommend sizing up.

Footwear Fit Notes

  • All footwear on our website is displayed in UK sizes unless otherwise stated.
  • Size conversions can vary slightly between brands and individual footwear styles.
  • Check the product description for any brand-specific sizing or fit advice.
  • If your measurement falls between two sizes, we recommend choosing the larger size.

Still Unsure?

If you are not certain which size is right for you, get in touch before ordering and we will be happy to help:

help@authentic-ireland.ie

If something does not fit once it arrives, you can request a return in line with our Returns Policy.

RETURNS | SHIPPING | SIZING | PRIVACY | TERMS | CONTACT
© 2026 AUTHENTIC IRELAND™
AUTHENTIC IRELAND CLOTHING IS A TRADING NAME OF ONSALENOW LIMITED · REGISTERED IN IRELAND · CRO 374301