My River Island

Info & help

Follow us

Men Muscle fit

You’ve worked hard all year, so show off your gains with our new season edit of men’s muscle fit tops. Crafted to emphasise your physique, our muscle-defining range is tailored to fit closely to the arms and torso. Preppy polos have your smart-casj game covered, while button-down shirts cut a sharp silhouette.

124 products
We thought you might like these!Based on your shopping habits...
White muscle fit crew neck T-shirt
promo badge
White muscle fit crew neck T-shirt
£8.00
  • White
  • Black
  • Blue
  • +7
Black muscle fit crew neck T-shirt
promo badge
Black muscle fit crew neck T-shirt
£8.00
  • Black
  • Blue
  • Green
  • +7
Black muscle fit scoop neck vest
promo badge
Black muscle fit scoop neck vest
£8.00
  • Black
  • White
Prolific black muscle fit hoodie
promo badge
Prolific black muscle fit hoodie
£28.00
  • Black
  • Grey
promo badge
Grey muscle fit short sleeve t-shirt
£8.00
Black long sleeve muscle fit block polo shirt
£30.00
Black long sleeve muscle kitted polo shirt
£28.00
  • Black
  • Grey
promo badge
Black essential muscle fit polo shirt
£12.00
  • Black
  • Blue
  • Grey
  • +3
Grey long sleeve muscle knitted polo shirt
£28.00
  • Grey
  • Black
promo badge
Dark grey essential muscle fit polo shirt
£12.00
  • Grey
  • Black
  • Blue
  • +3
promo badge
Prolific grey muscle fit hoodie
£28.00
  • Grey
  • Black
promo badge
White long sleeve muscle fit shirt
£22.00
  • White
  • Black
  • Purple
  • +1
Black prolific muscle short sleeve t-shirt
£18.00
promo badge
Black long sleeve muscle fit rib polo shirt
£20.00
  • Black
  • Khaki
  • Navy
  • +2
promo badge
Blue muscle fit polo shirt
£12.00
  • Blue
  • Black
  • Grey
  • +3
Brown Prolific short sleeve muscle t-shirt
£10.00
  • Brown
  • Yellow
Black colour block muscle fit knitted T-shirt
£22.00
promo badge
Black Prolific muscle block colour t-shirt
£18.00
promo badge
R96 white long sleeve muscle fit T-shirt
£15.00
promo badge
White essential muscle fit polo shirt
£12.00
  • White
  • Black
  • Blue
  • +3
promo badge
Black muscle fit short sleeve shirt
£20.00
  • Black
  • White
promo badge
Dark green muscle fit denim jacket
£45.00
  • Green
  • Black
  • Black
  • +1
Grey short sleeve muscle fit stripe t-shirt
£18.00
promo badge
R96 pink muscle fit long sleeve pique T-shirt
£15.00
promo badge
Black long sleeve muscle fit shirt
£22.00
  • Black
  • Purple
  • White
  • +1
promo badge
Brown short sleeve muscle fit T-shirt
£8.00
promo badge
Navy short sleeve muscle fit t-shirt
£8.00
Black muscle fit T-shirt 5 Pack
£30.00
promo badge
Pink long sleeve muscle fit oxford shirt
£26.00
  • Pink
  • Brown
  • Grey
  • +4
White muscle fit T-shirt 5 Pack
£30.00
promo badge
Black muscle fit denim jacket
£45.00
  • Black
  • Black
  • Blue
  • +1
promo badge
Navy short sleeve muscle fit oxford shirt
£22.00
Yellow Prolific short sleeve muscle t-shirt
£10.00
  • Yellow
  • Brown
promo badge
Grey long sleeve muscle fit oxford shirt
£26.00
  • Grey
  • Brown
  • Khaki
  • +4
Stone muscle fit T-shirt 5 pack
£30.00
promo badge
Black muscle fit hooded denim jacket
£50.00
  • Black
  • Blue
promo badge
Khaki long sleeve muscle fit oxford shirt
£26.00
  • Khaki
  • Brown
  • Grey
  • +4
promo badge
Navy muscle fit long sleeve Oxford shirt
£26.00
  • Navy
  • Black
  • White
  • +1
promo badge
Grey half zip muscle fit knitted polo shirt
£26.00
promo badge
Black half zip muscle fit knitted polo shirt
£26.00
Grey knitted zip neck muscle fit polo shirt
£26.00
promo badge
Pink crew neck muscle fit T-shirt
£8.00
promo badge
Black long sleeve muscle fit Oxford shirt
£26.00
  • Black
  • Navy
  • White
  • +1
promo badge
White long sleeve muscle fit rib polo shirt
£20.00
  • White
  • Black
  • Khaki
  • +2
promo badge
White muscle fit half zip knitted polo shirt
£26.00
  • White
  • Black
promo badge
White muscle fit long sleeve Oxford shirt
£26.00
  • White
  • Black
  • Navy
  • +1
Black blocked muscle fit knitted polo shirt
£28.00
promo badge
Grey printed muscle fit tank top
£8.00
promo badge
Black muscle fit tank vest
£8.00
  • Black
  • Green
  • White
promo badge
White muscle fit long sleeve Oxford shirt
£26.00
  • White
  • Black
  • Navy
  • +1
Black rib knitted muscle fit polo shirt
£26.00
Blue blocked muscle fit roll neck jumper
£28.00
Prolific white muscle fit blocked T-shirt
£18.00
Black short sleeve knitted t-shirt
£22.00
Grey check print muscle fit T-shirt
£20.00
Yellow chest print muscle fit T-shirt
£12.00
promo badge
Maison Riviera pink muscle fit tank top
£8.00
promo badge
Maison Riviera purple stripe muscle T-shirt
£18.00
promo badge
Khaki long sleeve muscle fit shirt
£22.00
promo badge
White muscle fit tank vest
£8.00
  • White
  • Black
  • Green
You've viewed of 124 products