Skip to content

Free Domestic Shipping Over £100

30 DAY RETURNS

Help Wishlist JOIN US

Featured

New Arrivals
Best Sellers
Better in Black
Workout Sets
Basics
Accessories
E-Gift Card
Sale

Collections

Seamless
Tenacity
Aura
Softcurve

Clothing

All Products
Shorts
Leggings
Bras
T-Shirts & Tops
Sweaters & Jackets
Pants
Tank Tops
Bodysuits

Guides

Sports Bra Guide
Shorts Guide
Leggings Guide

BRAS

SHORTS

LEGGINGS

Share the Look
FAQ
Loyalty Program
Discounts
About Us
Contact Us

Featured

New Arrivals
Best Sellers
Better in Black
Basics
Accessories
E-Gift Card
Sale

Clothing

All Products
Shorts
Shirts
Pants
Tanks & Stringers
Sweaters & Jackets
Long Sleeve Shirts
Boardshorts
Swimwear
Underwear

SHIRTS

SHORTS

PANTS

Share the Look
FAQ
Loyalty Program
Discounts
About Us
Contact Us

Account
United Kingdom

Change country
Update your country and language to be accurate with the place you're browsing from.

Change currency

Women
Men

United Kingdom

Change country
Update your country and language to be accurate with the place you're browsing from.

Change currency
Search

Search

Something went wrong. Please try again!
Log in
Cart

Men's

Running

Showing89 of 89 products

Filter by

Flex Short - Blackout

Flex Short - Blackout

QUICK ADD

Flex Short

Men's 2 in 1 Short Blackout

£50.00

Regular price £50.00

XS

S

M

+4

Dynamic Short - Slate Print

Dynamic Short - Slate Print

QUICK ADD

Dynamic Short

Men's Training Short Slate Print

£30.00

Regular price £30.00

XS

S

M

+4

Racer Tank - White

Racer Tank - White

QUICK ADD

Racer Tank

Men's Ultralight Tank Top White

£28.00

Regular price £28.00

XS

S

M

+4

Racer Tank - Cloud

Racer Tank - Cloud

QUICK ADD

Racer Tank

Men's Ultralight Tank Top Cloud

£34.00

Regular price £34.00

XS

S

M

+4

Racer Quarter Zip - White

Racer Quarter Zip - White

QUICK ADD

Racer Quarter Zip

Men's Quarter Zip Long Sleeve Shirt White

£56.00

Regular price £56.00

XS

S

M

+4

Flex Short - Varsity Blue

Flex Short - Varsity Blue

QUICK ADD

Flex Short

Men's 2 in 1 Short Varsity Blue

£50.00

Regular price £50.00

XS

S

M

+4

AeroFlex Tank - Black

AeroFlex Tank - Black

QUICK ADD

AeroFlex Tank

Men's Tank Top Black

£36.00

Regular price £36.00

XS

S

M

+4

AeroFlex Tank - Iron Storm

AeroFlex Tank - Iron Storm

QUICK ADD

AeroFlex Tank

Men's Tank Top Iron Storm

£36.00

Regular price £36.00

XS

S

M

+4

AeroFlex Tank - Desert Grit

AeroFlex Tank - Desert Grit

QUICK ADD

AeroFlex Tank

Men's Tank Top Desert Grit

£36.00

Regular price £36.00

XS

S

M

+4

AeroFlex Tank - Titanium Drive

AeroFlex Tank - Titanium Drive

QUICK ADD

AeroFlex Tank

Men's Tank Top Titanium Drive

£36.00

Regular price £36.00

XS

S

M

+4

AeroFlex Vault Tank - Black

AeroFlex Vault Tank - Black

QUICK ADD

AeroFlex Vault Tank

Men's Tank Top Black

£36.00

Regular price £36.00

XS

S

M

+4

AeroFlex Vault Tank - Iron Charcoal

AeroFlex Vault Tank - Iron Charcoal

QUICK ADD

AeroFlex Vault Tank

Men's Tank Top Iron Charcoal

£36.00

Regular price £36.00

XS

S

M

+4

Union Mineral Cutoff - Washed Grey

Union Mineral Cutoff - Washed Grey

QUICK ADD

Union Mineral Cutoff

Men's Tank Top Washed Grey

£40.00

Regular price £40.00

XS

S

M

+4

AirFlex Mesh Short - Metal

AirFlex Mesh Short - Metal

QUICK ADD

AirFlex Mesh Short

Men's Training Short Metal

£42.00

Regular price £42.00

XS

S

M

+3

Apex Short - Tactical Olive

Apex Short - Tactical Olive

QUICK ADD

Apex Short

Men's Training Short Tactical Olive

£42.00

Regular price £42.00

XS

S

M

+3

Infinity Tech Jacket - Formula Red

Infinity Tech Jacket - Formula Red

QUICK ADD

Infinity Tech Jacket

Men’s Technical Jacket Formula Red

£58.00

Regular price £58.00

XS

S

M

+4

Infinity Short - Formula Red

Infinity Short - Formula Red

QUICK ADD

Infinity Short

Men's 2 in 1 Short Formula Red

£42.00

Regular price £42.00

XS

S

M

+4

Racer Tank - Black

Racer Tank - Black

QUICK ADD

Racer Tank

Men's Ultralight Tank Top Black

£34.00

Regular price £34.00

XS

S

M

+4

Racer Quarter Zip - Cloud

Racer Quarter Zip - Cloud

Sold out

Racer Quarter Zip

Men's Quarter Zip Long Sleeve Shirt Cloud

£56.00

Regular price £56.00

Flex Short - Highlight

Flex Short - Highlight

QUICK ADD

Flex Short

Men's 2 in 1 Short Highlight

£50.00

Regular price £50.00

XS

S

M

+4

Help

Share the Look
FAQ
Loyalty Program
Discounts
About Us
Contact Us

Help

Share the Look
FAQ
Loyalty Program
Discounts
About Us
Contact Us

More

Privacy Policy
Terms of Service
Accessibility

More

Privacy Policy
Terms of Service
Accessibility

Address

71-75 Shelton Street, Covent Garden, London, England, WC2H 9JQ

Address

71-75 Shelton Street, Covent Garden, London, England, WC2H 9JQ

Copyright © 2026 FourthPhase. All rights reserved. Powered by Shopify.

Payment methods

Your cart0

YOUR BAG IS EMPTY

Give your bag some love!

SHOP MEN'S SHOP WOMEN'S

Choose options

Quick cart is currently empty

No product has been selected yet.

NOTIFY ME WHEN AVAILABLE

SELECT A SIZE

EMAIL

Choosing a selection results in a full page refresh.