Skip to content
  • Shop M&S Christmas Gift Cards
  • Christmas Food to Order
  • M&S Credit Card Find Out More
HelpFind a store

Sign in

Sign in or create an account:

  • for faster checkout
  • to unlock personalised Sparks offers
  • to access order history and track deliveries
Free store collection
Free delivery when you spend £60
Extended Christmas returns

Sign in

Sign in or create an account:

  • for faster checkout
  • to unlock personalised Sparks offers
  • to access order history and track deliveries

Kids’ Blue Underwear

Stock up on staples from our collection of kids’ blue underwear for ages two to 16. We’ve got boxers and briefs with fun patterns and camo print, alongside colourful knickers and comfy, no-seam shorts. Choose from pure-cotton designs with added stretch for maximum comfort and breathability, and get free delivery over £60 when you order online

(1 applied)
  • Blue
  • Gender with 3 options
  • Style with 8 options
  • Kids Sizes with 34 options
  • Colour with 12 options
  • Blue

There are 19 Items found

2pk Heatgen™ Thermal Vests (2-14 Yrs) image 1
£12 - £13
M&S Collection

2pk Heatgen™ Thermal Vests (2-14 Yrs)

From £6 per item

5pk Cotton Rich Football Trunks (5-12 Yrs) image 1
£11.50 - £12.50
M&S Collection

5pk Cotton Rich Football Trunks (5-12 Yrs)

5pk Pure Cotton Vests (2-14 Yrs) image 1
£9.50
M&S Collection

5pk Pure Cotton Vests (2-14 Yrs)

£1.90 per item

  • 5pk Cotton Rich Trunks (5-16 Yrs) image 1
  • 5pk Cotton Rich Trunks (5-16 Yrs) image 2
£9.50
M&S Collection

5pk Cotton Rich Trunks (5-16 Yrs)

£1.90 per item

5pk Cotton Rich Trunks image 1
£11.50 - £12.50
M&S Collection

5pk Cotton Rich Trunks

From £2.30 per item

Heatgen™ Thermal Long Johns (2-14 Yrs) image 1
£8 - £9
M&S Collection

Heatgen™ Thermal Long Johns (2-14 Yrs)

£9 per item

  • 5pk Pure Cotton Frozen™ Knickers (2-10 Yrs) image 1
  • 5pk Pure Cotton Frozen™ Knickers (2-10 Yrs) image 2
£9.50 - £10.50
M&S Collection

5pk Pure Cotton Frozen™ Knickers (2-10 Yrs)

7pk Pure Cotton Striped Star Briefs (2-8 Yrs) image 1
£9.50
M&S Collection

7pk Pure Cotton Striped Star Briefs (2-8 Yrs)

10pk Pure Cotton Briefs (2-14 Yrs) image 1
£9.50
M&S Collection

10pk Pure Cotton Briefs (2-14 Yrs)

£0.95 per item