Kids’ Underwear

Our kids’ underwear department has easy, practical shapes cut from top-quality fabrics that are made to last. Shop our selections of boys’ underwear and girls’ underwear to find their preferred styles in handy multi-packs. Our kids’ trunks and girls’ knicker shorts give a neat and comfy wear, while our boys’ briefs and girls’ knickers are ideal if they like a lighter feel. We also have girls’ crop tops that provide gentle support for developing bodies. When it comes to colourways, our kids’ underwear in black, grey, white and cream hues are good plain staples. If they prefer undies with a splash of colour, you’ll also find primary brights alongside soft pastel tones.

When the colder weather arrives, our girls’ and boys’ thermal underwear helps them beat the chill. Insulating fibres and cosy brushed finishes help retain their body’s natural warmth for protection without bulk. Choose girls’ and boys’ vests for snugness round their core, or opt for long-sleeved tops that give added coverage. For their bottom half, we have an assortment of tights and long johns. Add in some kids’ socks for toasty toes, and they’re all set.

Get them ready for a night of sweet dreams with our new season’s collection of kids’ nightwear. We have short and long pairs to suit the season, in an assortment of colours so they can find their favourite. Look out for kids’ multi-packs of nightwear so they can mix and match their bedtime attire. Why not treat them to a cosy dressing gown for lounging?

Kids’ Underwear

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S2 Pack Heatgen™ Thermal Leggings (2-14 Yrs)

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S5 Pack Cotton with Stretch Trunks (5-16 Yrs)

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S2 Pack Heatgen™ Thermal Vests (2-14 Yrs)

M&S5 Pack Pure Cotton Heart Print Vests (2-14 Yrs)

M&S10 Pack Cotton with Stretch Pink Heart Knickers (2-14 Yrs)

M&S5 Pack Pure Cotton Bow Vests (2-14 Yrs)

M&S5 Pack Pure Cotton Vests (2-14 Yrs)

M&S7 Pack Cotton Rich Star Stripe Shorts (5-16 Yrs)

M&S2pk Non Wired First Bra

M&S5 Pack Cotton Rich Bluey™ Knickers (2-8 Yrs)

M&S2pk Non Wired First Bras AA-D

M&S5 Pack Cotton with Stretch Football Trunks (5-16 Yrs)

M&S2pk Non Wired First Bra

M&S2pk Non Wired First Bra

M&S5 Pack Pure Cotton Plain Vests (2-14 Yrs)

M&S2pk Non Wired Cotton Rich Ribbed First Bras AA-D

M&S5 Pack Cotton with Stretch Nautical Trunks (5-16 Yrs)

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S7 Pack Cotton With Stretch Ballerina Knickers (18 Mths - 10 Yrs)

M&S4 Pack Pure Cotton Short Sleeve Vests (2-14 Yrs)

M&S5 Pack Pure Cotton Spider-Man™ Briefs (18 Mths - 8 Yrs)

M&S5 Pack Cotton Rich Camo Trunks (5-16 Yrs)

M&S5 Pack Cotton Rich Gaming Trunks (5-16 Yrs)

M&S5 Pack Cotton Rich Nautical Trunks (5-16 Yrs)

M&S2 Pack Heatgen™ Thermal Leggings (2-14 Yrs)

M&S5 Pack Cotton Rich Striped Trunks (5-16 Yrs)

M&S7 Pack Cotton Rich Floral Knickers (18 Mths - 16 Yrs)

M&S5 Pack Cotton with Stretch Trunks (5-16 Yrs)

M&S5 Pack Pure Cotton Heart Print Vests (2-14 Yrs)

M&S5 Pack Disney Frozen™ Cotton with Stretch Knickers (2-8 Yrs)

M&S7 Pack Cotton with Stretch Heart Print Shorts (5-16 Yrs)

M&S10 Pack Cotton with Stretch Knickers (2-14 Yrs)

M&S5pc Cotton with Stretch Bright Trunks (5-16 Yrs)

M&S7 Pack Cotton Rich Horse Knickers (18 Months-16 Yrs)

M&S5 Pack Pure Cotton Vests (2-14 Yrs)

M&S10 Pack Pure Cotton Briefs (18 Mths-16 Yrs)

M&S7 Pack Pure Cotton Construction Briefs (18 Mths - 10 Yrs)

M&S2pk Non Wired Cotton Rich Ribbed First Bras AA-D

M&S7 Pack Pure Cotton Camo Briefs (18 Mths-16 Yrs)

M&S5 Pack Cotton Rich Plain Camis (2-14 Yrs)

M&S5 Pack Pure Cotton Plain Vests (2-14 Yrs)

M&S2 Pack Heatgen™ Thermal Tops (2-14 Yrs)

M&S7 Pack Cotton Plain Bikini Knickers (5-16 Yrs)

M&SCotton Blend Spider-Man™ Thermal Set (18 Mths - 12 Yrs)