Skip to main content

Search for products, brands and more...

Main Menu

Designer Brands

Clothing

Footwear

Accessories

Seasonal

New In

Bestsellers

Sale

Purchase Gift Certificate

Account

Discounts

Help

Change Location

Change Currency

Designer Brands

Designer Brands

View All Designer Brands

Clothing

All Clothing
Tracksuits
Hoodies
T Shirts
Polo Shirts
Shirts
Jackets & Coats
Gilets
Jumpers
Knitwear
Jeans & Trousers
Chinos
Joggers
Loungewear
Suits & Tailoring
Shorts
Swimwear
Sweatshirts
Track Tops
Overshirts

Footwear

All Footwear
Trainers
Boots
Chelsea Boots
Shoes
Brogues
Slippers
Loafers
Boat Shoes
Sliders
Flip Flops
Sandals

Shop by Size

UK6
UK7
UK8
UK9
UK10
UK11
UK12
ALL

Shop By Brand

Nike
Adidas Originals
BOSS Business
Ralph Lauren
Hugo
Lacoste
New Balance
Paul Smith
Fred Perry
Barbour
Dsquared2
Timberland
Emporio Armani
EA7 Emporio Armani
Diadora
GH Bass
Mallet
Oliver Sweeney

Accessories

Accessories
Triple Packs
Double Packs
Underwear
Nightwear
Socks
Dressing Gowns
Belts
Wallets
Watches
Bags
Luggage
Caps
Sunglasses
Jewellery
Gifts
Hats
Scarves
Gloves
Sports Equipment

Seasonal

Seasonal Must Haves
Sweatshirts
Jackets & Coats
Tracksuits
Shoe Care
Gifts
Sale

New In
Newest T-Shirts
Newest Shirts
Newest Jackets
Newest Jumpers
Newest Footwear
Newest Underwear
Newest Shorts
Newest Tracksuits
Newest Joggers
Newest Jeans
Newest Accessories

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Bestsellers
Bestselling T-Shirts
Bestselling Shirts
Bestselling Jackets
Bestselling Jumpers / Zip Tops
Bestselling Footwear
Bestselling Underwear
Bestselling Shorts
Bestselling Tracksuits
Bestselling Joggers
Bestselling Jeans / Trousers
Bestselling Accessories

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Add to your bag

Sorry, this item is out of stock!

Sale

Sale
T-Shirts
Shirts
Jackets
Jumpers
Footwear
Underwear
Shorts
Tracksuits
Joggers
Jeans
Accessories

Home
boss athleisure
sale items

BOSS Athleisure Sale

BOSS Athleisure Outlet.

Grab a bargain today with cheap BOSS Athleisure for men in the Mainline sale.

Browse the full BOSS sale collection.

Showing 1 - 60 (of 341 items found)

Items per line

boss athleisure

BOSS Athleisure T Shirts
BOSS Athleisure Shirts
BOSS Athleisure Jumpers and Zip Tops
BOSS Athleisure Jackets
BOSS Athleisure Shorts
BOSS Athleisure Jeans and Trousers
BOSS Athleisure Footwear
BOSS Athleisure Accessories
BOSS Athleisure Sale Items

Size

XS

S

M

L

XL

XXL

3XL

4XL

5XL

6XL

30W

32W

34W

36W

38W

40W

One Size

Colour

Black

Blue

Grey

Navy

White

Beige

Green

Brown

Orange

Pink

Cream

Khaki

Multi

Red

Yellow

Price (GBP)

Category

T Shirts

Polos

Shirts

Sweatshirts

Jackets

Shorts

Knitwear

Hoodies

Tracksuits

Gilets

Caps/hats

Joggers

Jeans/trousers

Vests

Subcategory

Jersey Shorts

Chino Shorts

Baseball Caps

Overshirts

Cargo Shorts

Chinos

Double Packs

Trousers

Sleeve Length

Short Sleeve

Long Sleeve

Sleeveless

Fit

Regular Fit

Slim Fit

Loose Fit

Tapered Fit

Design

Plain

Big Logo Print

All Over Print

Colour Block

Stripe

Check

Paisley

Style

Crew Neck

Polo Collar

Standard Shirt Collar

Stand Up Collar

Lightweight

Hooded

Button Down Collar

Overshirt

Padded

Bomber

Grandad Collar

Select your size

XS

S

M

L

XL

XXL

3XL

4XL

5XL

6XL

30W

32W

34W

36W

38W

40W

One Size

Product image for BOSS Tee T Shirt Pastel Blue

BOSS Tee T Shirt Pastel Blue

Add to your bag

BOSS Tee T Shirt Pastel Blue

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Blue

BOSS Tee T Shirt Blue

Add to your bag

BOSS Tee T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Brown

BOSS Tee T Shirt Brown

Add to your bag

BOSS Tee T Shirt Brown

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Blue

BOSS Tee T Shirt Blue

Add to your bag

BOSS Tee T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Blue

BOSS Tee T Shirt Blue

Add to your bag

BOSS Tee T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Open Blue

BOSS Tee T Shirt Open Blue

Add to your bag

BOSS Tee T Shirt Open Blue

Sorry, this item is out of stock!

Product image for BOSS Tee 10 T Shirt Blue

BOSS Tee 10 T Shirt Blue

Add to your bag

BOSS Tee 10 T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Grey

BOSS Tee T Shirt Grey

Add to your bag

BOSS Tee T Shirt Grey

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Open Green

BOSS Tee T Shirt Open Green

Add to your bag

BOSS Tee T Shirt Open Green

Sorry, this item is out of stock!

Product image for BOSS Union Paddy Polo T Shirt Dark Blue

BOSS Union Paddy Polo T Shirt Dark Blue

SaleFree Delivery

Add to your bag

BOSS Union Paddy Polo T Shirt Dark Blue

Sorry, this item is out of stock!

Product image for BOSS Union Paddy Polo T Shirt Black

BOSS Union Paddy Polo T Shirt Black

SaleFree Delivery

Add to your bag

BOSS Union Paddy Polo T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS Swing Paddy Polo T Shirt Navy

BOSS Swing Paddy Polo T Shirt Navy

SaleFree Delivery

Add to your bag

BOSS Swing Paddy Polo T Shirt Navy

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Light Pink

BOSS Tee T Shirt Light Pink

Add to your bag

BOSS Tee T Shirt Light Pink

Sorry, this item is out of stock!

Product image for BOSS Tee T Shirt Open Yellow

BOSS Tee T Shirt Open Yellow

Add to your bag

BOSS Tee T Shirt Open Yellow

Sorry, this item is out of stock!

Product image for BOSS Toc Game 3 Short Sleeve Polo Black

BOSS Toc Game 3 Short Sleeve Polo Black

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Toc Game 3 Short Sleeve Polo Black

Sorry, this item is out of stock!

Product image for BOSS Network Photo T Shirt Open White

BOSS Network Photo T Shirt Open White

SaleFree Delivery

Add to your bag

BOSS Network Photo T Shirt Open White

Sorry, this item is out of stock!

Product image for BOSS Active Zip Sweatshirt Black

BOSS Active Zip Sweatshirt Black

£129.00£89.00

SaleFree Delivery

Add to your bag

BOSS Active Zip Sweatshirt Black

Sorry, this item is out of stock!

Product image for BOSS ST Motion Short Sleeve Shirt Grey

BOSS ST Motion Short Sleeve Shirt Grey

£119.00£85.00

SaleFree Delivery

Add to your bag

BOSS ST Motion Short Sleeve Shirt Grey

Sorry, this item is out of stock!

Product image for BOSS ST Excurse Short Sleeve Shirt Beige

BOSS ST Excurse Short Sleeve Shirt Beige

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS ST Excurse Short Sleeve Shirt Beige

Sorry, this item is out of stock!

Product image for BOSS Union Paddy Polo T Shirt Blue

BOSS Union Paddy Polo T Shirt Blue

SaleFree Delivery

Add to your bag

BOSS Union Paddy Polo T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Short Sleeved Dymova Shirt Dark Blue

BOSS Short Sleeved Dymova Shirt Dark Blue

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Short Sleeved Dymova Shirt Dark Blue

Sorry, this item is out of stock!

Product image for BOSS Short Sleeved Dymova Shirt Brown

BOSS Short Sleeved Dymova Shirt Brown

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Short Sleeved Dymova Shirt Brown

Sorry, this item is out of stock!

Product image for BOSS Union Paddy Polo T Shirt White

BOSS Union Paddy Polo T Shirt White

SaleFree Delivery

Add to your bag

BOSS Union Paddy Polo T Shirt White

Sorry, this item is out of stock!

Product image for BOSS Network Photo T Shirt Pastel Orange

BOSS Network Photo T Shirt Pastel Orange

SaleFree Delivery

Add to your bag

BOSS Network Photo T Shirt Pastel Orange

Sorry, this item is out of stock!

Product image for BOSS Paddy Pro Polo T Shirt White

BOSS Paddy Pro Polo T Shirt White

SaleFree Delivery

Add to your bag

BOSS Paddy Pro Polo T Shirt White

Sorry, this item is out of stock!

Product image for BOSS Slim Fit Philix Polo T Shirt Pink

BOSS Slim Fit Philix Polo T Shirt Pink

£119.00£85.00

SaleFree Delivery

Add to your bag

BOSS Slim Fit Philix Polo T Shirt Pink

Sorry, this item is out of stock!

BOSS Silicon Logo T Shirt Green

Add to your bag

BOSS Silicon Logo T Shirt Green

Sorry, this item is out of stock!

Product image for BOSS ST Motion Short Sleeve Shirt Orange

BOSS ST Motion Short Sleeve Shirt Orange

£119.00£85.00

SaleFree Delivery

Add to your bag

BOSS ST Motion Short Sleeve Shirt Orange

Sorry, this item is out of stock!

Product image for BOSS Paddy Pro Polo T Shirt Light Beige

BOSS Paddy Pro Polo T Shirt Light Beige

SaleFree Delivery

Add to your bag

BOSS Paddy Pro Polo T Shirt Light Beige

Sorry, this item is out of stock!

Product image for BOSS Slim Fit Philix Polo T Shirt Beige

BOSS Slim Fit Philix Polo T Shirt Beige

£119.00£77.00

SaleFree Delivery

Add to your bag

BOSS Slim Fit Philix Polo T Shirt Beige

Sorry, this item is out of stock!

Product image for BOSS Network Paule Polo T Shirt Green

BOSS Network Paule Polo T Shirt Green

SaleFree Delivery

Add to your bag

BOSS Network Paule Polo T Shirt Green

Sorry, this item is out of stock!

Product image for BOSS Ever X Knit Polo Jumper Back

BOSS Ever X Knit Polo Jumper Back

£139.00£89.00

SaleFree Delivery

Add to your bag

BOSS Ever X Knit Polo Jumper Back

Sorry, this item is out of stock!

Product image for BOSS Active Zip Hoodie Blue

BOSS Active Zip Hoodie Blue

£129.00£89.00

SaleFree Delivery

Add to your bag

BOSS Active Zip Hoodie Blue

Sorry, this item is out of stock!

Product image for BOSS Swing Paddy Polo T Shirt Light Orange

BOSS Swing Paddy Polo T Shirt Light Orange

SaleFree Delivery

Add to your bag

BOSS Swing Paddy Polo T Shirt Light Orange

Sorry, this item is out of stock!

Product image for BOSS Tee 10 T Shirt Dark Grey

BOSS Tee 10 T Shirt Dark Grey

Add to your bag

BOSS Tee 10 T Shirt Dark Grey

Sorry, this item is out of stock!

Product image for BOSS Toc Game 3 Short Sleeve Polo Navy

BOSS Toc Game 3 Short Sleeve Polo Navy

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Toc Game 3 Short Sleeve Polo Navy

Sorry, this item is out of stock!

Product image for BOSS Network Flag T Shirt White

BOSS Network Flag T Shirt White

Add to your bag

BOSS Network Flag T Shirt White

Sorry, this item is out of stock!

Product image for BOSS PL GOC Birdie 3 Polo T Shirt Blue

BOSS PL GOC Birdie 3 Polo T Shirt Blue

£119.00£69.00

SaleFree Delivery

Add to your bag

BOSS PL GOC Birdie 3 Polo T Shirt Blue

Sorry, this item is out of stock!

Product image for BOSS Toc Serve 2 Black

BOSS Toc Serve 2 Black

SaleFree Delivery

Add to your bag

BOSS Toc Serve 2 Black

Sorry, this item is out of stock!

Product image for BOSS Globe Pattern Polo T Shirt Beige

BOSS Globe Pattern Polo T Shirt Beige

£129.00£75.00

SaleFree Delivery

Add to your bag

BOSS Globe Pattern Polo T Shirt Beige

Sorry, this item is out of stock!

BOSS Active Logo T Shirt Black

Add to your bag

BOSS Active Logo T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS Member Short Sleeved Shirt Black

BOSS Member Short Sleeved Shirt Black

£139.00£99.00

SaleFree Delivery

Add to your bag

BOSS Member Short Sleeved Shirt Black

Sorry, this item is out of stock!

Product image for BOSS PL Active Repeat Polo T Shirt Black

BOSS PL Active Repeat Polo T Shirt Black

£139.00£85.00

SaleFree Delivery

Add to your bag

BOSS PL Active Repeat Polo T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS ST GOC Swing Shirt Black

BOSS ST GOC Swing Shirt Black

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS ST GOC Swing Shirt Black

Sorry, this item is out of stock!

Product image for BOSS Toc Game 3 Short Sleeve Polo White

BOSS Toc Game 3 Short Sleeve Polo White

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Toc Game 3 Short Sleeve Polo White

Sorry, this item is out of stock!

Product image for BOSS Excurse Short Sleeve Shirt White

BOSS Excurse Short Sleeve Shirt White

£129.00£75.00

SaleFree Delivery

Add to your bag

BOSS Excurse Short Sleeve Shirt White

Sorry, this item is out of stock!

Product image for BOSS TOC Spin Training T Shirt Black

BOSS TOC Spin Training T Shirt Black

SaleFree Delivery

Add to your bag

BOSS TOC Spin Training T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS ST GOC Swing Shirt White

BOSS ST GOC Swing Shirt White

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS ST GOC Swing Shirt White

Sorry, this item is out of stock!

Product image for BOSS PL GOC Birdie 3 Polo T Shirt Black

BOSS PL GOC Birdie 3 Polo T Shirt Black

£119.00£69.00

SaleFree Delivery

Add to your bag

BOSS PL GOC Birdie 3 Polo T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS Long Sleeved Dymova Shirt Dark Blue

BOSS Long Sleeved Dymova Shirt Dark Blue

£139.00£89.00

SaleFree Delivery

Add to your bag

BOSS Long Sleeved Dymova Shirt Dark Blue

Sorry, this item is out of stock!

Product image for BOSS PL TOC Serve 2 Polo T Shirt Black

BOSS PL TOC Serve 2 Polo T Shirt Black

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS PL TOC Serve 2 Polo T Shirt Black

Sorry, this item is out of stock!

Product image for BOSS Flex Twill Shorts Dark Blue

BOSS Flex Twill Shorts Dark Blue

SaleFree Delivery

Add to your bag

BOSS Flex Twill Shorts Dark Blue

Sorry, this item is out of stock!

Product image for BOSS Contrast Piping Tracksuit Set Black

BOSS Contrast Piping Tracksuit Set Black

£319.00£199.00

SaleFree Delivery

Add to your bag

BOSS Contrast Piping Tracksuit Set Black

Sorry, this item is out of stock!

Product image for BOSS ST GOC Swing Shirt Light Orange

BOSS ST GOC Swing Shirt Light Orange

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS ST GOC Swing Shirt Light Orange

Sorry, this item is out of stock!

Product image for BOSS Toc Serve 2 Light Blue

BOSS Toc Serve 2 Light Blue

SaleFree Delivery

Add to your bag

BOSS Toc Serve 2 Light Blue

Sorry, this item is out of stock!

Product image for BOSS Active Tennis Shorts Dark Grey

BOSS Active Tennis Shorts Dark Grey

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Active Tennis Shorts Dark Grey

Sorry, this item is out of stock!

Product image for BOSS Terrace Short Sleeve Shirt Dark Blue

BOSS Terrace Short Sleeve Shirt Dark Blue

£159.00£99.00

SaleFree Delivery

Add to your bag

BOSS Terrace Short Sleeve Shirt Dark Blue

Sorry, this item is out of stock!

Product image for BOSS Excurse Short Sleeve Striped Shirt Beige

BOSS Excurse Short Sleeve Striped Shirt Beige

£129.00£83.00

SaleFree Delivery

Add to your bag

BOSS Excurse Short Sleeve Striped Shirt Beige

Sorry, this item is out of stock!

Product image for BOSS Flex Twill Shorts Light Beige

BOSS Flex Twill Shorts Light Beige

SaleFree Delivery

Add to your bag

BOSS Flex Twill Shorts Light Beige

Sorry, this item is out of stock!

Product image for BOSS Flex Twill Shorts Black

BOSS Flex Twill Shorts Black

SaleFree Delivery

Add to your bag

BOSS Flex Twill Shorts Black

Sorry, this item is out of stock!

1
2
3
...
6

Were always slashing our prices, so keep your eye out for a great deal. From caps to jumpers, theres something for everything in the BOSS Athleisure sale.

Sign Up for News & Offers

Please enter a valid email address

Thank you for signing up!

Mainline Menswear Limited will use your information in accordance with our Privacy Policy - updated from May 2024.

Information

Contact Us About Us Cookie Policy Terms and Conditions Privacy Policy Accessibility Policy

Featured

Gift Certificates A-Z Designer Brands Careers Affiliate Program Student Discount Youth Discount Key Worker Discount Strava Discount

Fulfilment & Aftersales

Delivery Information Tracking Your Order Exchanges & Returns Customer Reviews

Contact Us

+44 (0)1723 624 264

Office Hours (GMT)

Cookie Policy Cookie Settings Terms & Conditions Privacy Policy Accessibility Policy

© Copyright 2004 - 2026 Mainline Menswear Ltd. All Rights Reserved.
All brand names and associated imagery and logos etc are property of their respective owners with which Mainline Menswear Ltd has fully signed contracts.