Shop Sock Stack's children's underwear — soft cotton briefs, trunks, and vests for boys and girls in a range of fun colours and everyday styles, all made from breathable cotton-rich fabrics with a gentle non-roll waistband and flatlock seams for lasting comfort during school days and active play; pair with our children's socks and children's sleep & lounge for a complete kids' comfort wardrobe, with free UK delivery on orders over £22 and fast UK dispatch on every order.

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Heatwave Thermalwear

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Set of six Sock Stack kids' cotton vests for boys and girls, suitable for school ages 2-13, shown in main.jpg_3.jpg.Sock Stack kids cotton vests for boys and girls, 6-pack, featuring colorful, soft vests suitable for school age children 2-13.
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2/3 YEARS3/5 YEARS6/8 YEARS9/11 YEARS12/13 YEARS
Vendor: Sock Stack

Sock Stack Kids Cotton Vests Boys Girls 6 Pack School Ages 2-13

Regular price £10.00 GBP
Sale price: £10.00 GBP Regular price: Sale: -0%
In stock, 295 units
Girls' Heatwave Thermalwear lined thermal underwear set with long-sleeve top and long bottoms, ideal for cold weather winter base layer.Girls' Heatwave Thermalwear fleece-lined thermal underwear set with long sleeve top and bottoms, ideal for cold weather winter base layer.
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3-5 YRS6-8 YRS9-11 YRS12-13 YRS

Heatwave Thermalwear Girls Lined Thermal Underwear Set With Long Sleeve Top Base Layer

Regular price £8.00 GBP
Sale price: £8.00 GBP Regular price: Sale: -0%
In stock, 2132 units
Pack of 3 Heatwave Thermalwear girls' thermal fleece leggings in black, warm, stretchable winter pants for outdoor and indoor wear.Pack of 3 Heatwave Thermalwear girls' thermal fleece leggings, warm, stretchable winter pants for cold weather outdoor activities.

Heatwave Thermalwear Girls Thermal Fleece Leggings Pack Of 3 Warm Stretchable Winter

Regular price £8.00 GBP
Sale price: £8.00 GBP Regular price: Sale: -0%
Out of stock
BLACK BLACK
Six pairs of Sock Stack boys' boxer shorts in black cotton-rich, moisture-wicking fabric with button fly and elastic waistband.Six pairs of Sock Stack boys' boxer shorts in black cotton, moisture-wicking fabric with button fly and elastic waistband.
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3/5 YEARS6/8 YEARS9/11 YEARS12/13 YEARS
Vendor: Sock Stack

Sock Stack Boys Boxer Shorts 6 Pack Black Cotton Rich Moisture Wicking With Button Fly

Regular price £10.00 GBP
Sale price: £10.00 GBP Regular price: Sale: -0%
Only 6 units left
Pack of 5 boys' Sock Stack boxer shorts with football, army, and gamer designs in cotton-rich fabric and elastic waistband.Pack of 5 Sock Stack boys' boxer shorts with cotton-rich fabric, football, army, and gamer designs, elastic waistband for active kids.
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Size
5-6 YRS7-8 YRS9-10 YRS11-12 YRS
Vendor: Sock Stack

Sock Stack Pack Of 5 Boys Boxer Shorts Cotton Rich Football Army Gamer Designs Elastic

Regular price £9.00 GBP
Sale price: £9.00 GBP Regular price: Sale: -0%
In stock, 989 units
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Sock Stack boys boxer shorts pack featuring fun print designs, elastic waistband, breathable cotton blend, suitable for kids aged 2-3 years.Set of 5 boys' Boxer Shorts by Sock Stack with fun prints, elastic waistband, breathable cotton, perfect for everyday wear.
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2-3 YRS3-4 YRS4-5 YRS5-6 YRS
Vendor: Sock Stack

Sock Stack Pack Of 5 Boys Boxer Shorts For Kids Fun Prints Elastic Waistband Everyday Cotton Rich Multipack

Regular price £9.00 GBP
Sale price: £9.00 GBP Regular price: Sale: -0%
In stock, 814 units
ASSORTED ASSORTED
Heatwave Thermalwear boys long johns, black thermal undergarments for school, camping, and skiing, moisture-wicking and comfortable fit.Heatwave Thermalwear boys long johns in black, 2-pack, moisture-wicking thermal underwear for school, camping, and skiing.
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3-5 YRS6-8 YRS9-11 YRS12-13 YRS14-15 YRS

Heatwave Thermalwear Boys Long Johns 2 Pack Black Baselayer For School Camping And Skiing

Regular price £15.00 GBP
Sale price: £15.00 GBP Regular price: Sale: -0%
In stock, 1981 units
BLACK BLACK
Pack of 6 Sock Stack boys boxer shorts with breathable Lycra cotton, comfortable fit, secure waistband, ideal for school and sports.
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Size
5-6 YEARS7-8 YEARS9-10 YEARS11-12 YEARS13 YEARS
Vendor: Sock Stack

Sock Stack KB03 Boys Boxer Shorts Pack Of 6 Lycra Cotton Comfortable Fit Breathable School

Regular price £12.00 GBP
Sale price: £12.00 GBP Regular price: Sale: -0%
In stock, 335 units
BLACK BLACK
Sock Stack boys boxer shorts pack of 6, loose fit woven cotton blend with elastic waist, breathable and comfortable for kids ages 5-13.Sock Stack boys' pack of 6 loose-fit woven boxer shorts in breathable cotton blend with stretch waistband for comfort.
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Size
5-6 YEARS7-8 YEARS9-10 YEARS11-12 YEARS13 YEARS
Vendor: Sock Stack

Sock Stack Pack Of 6 Boys Loose Fit Woven Boxer Shorts Cotton Mix Breathable Cotton Rich Stretch Comfort Fit

Regular price £11.00 GBP
Sale price: £11.00 GBP Regular price: Sale: -0%
In stock, 86 units
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Pack of 5 Daisy Dreamer girls' cotton underwear briefs in various colors and animal leopard print, sized for ages 9 to 16.Pack of 5 Daisy Dreamer girls' cotton underwear briefs in various colors, soft, durable, comfortable fit for ages 9 to 16.
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9-1011-1213-1415-16
Vendor: Daisy Dreamer

Daisy Dreamer Pack Of 5 Girls Cotton Underwear Briefs Soft Durable Comfort Fit Ages 9

Regular price £12.00 GBP
Sale price: £12.00 GBP Regular price: Sale: -0%
In stock, 2474 units
Sock Stack boys' 7-pack cotton boxer shorts with assorted colors, soft stretch waistband, breathable for active kids ages 5-13.Sock Stack boys cotton-rich boxer shorts 7-pack with assorted colors, comfortable stretch fit, breathable fabric for ages 5-13.
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Size
5-6 YRS7-8 YRS9-10 YRS11-12 YRS13 YRS
Vendor: Sock Stack

Sock Stack 7 Pack Boys Cotton Rich Boxer Shorts Trunks Ages 5-13 Assorted Colours

Regular price £12.00 GBP
Sale price: £12.00 GBP Regular price: Sale: -0%
In stock, 2931 units
Pack of 4 Daisy Dreamer girls' seamless racer back sports bralettes and crop tops, stretchy and comfortable for kids and teens.Pack of 4 Daisy Dreamer girls' seamless racerback sports bralettes, stretchy, comfortable crop tops for kids and teens.
Vendor: Daisy Dreamer

Daisy Dreamer Pack Of 4 Girls Racer Back Seamless Sports Bralettes Crop Top Training Bras

Regular price £13.00 GBP
Sale price: £13.00 GBP Regular price: Sale: -0%
Out of stock
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Daisy Dreamer pack of 4 girls' cotton comfort fit underwear shorts, breathable stretchy fabric, assorted colors for ages 6-13.
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Size
6-7 YRS8-9 YRS10-11 YRS12-13 YRS
Vendor: Daisy Dreamer

Daisy Dreamer Pack Of 4 Girls Cotton Comfort Fit Shorts Underwear Breathable Stretchy

Regular price £10.00 GBP
Sale price: £10.00 GBP Regular price: Sale: -0%
In stock, 15 units
ASSORTED ASSORTED
Daisy Dreamer girls' thermal underwear set with long sleeve top and long pants, cotton-rich, breathable winter base layer for kids.Daisy Dreamer girls thermal underwear set with long sleeve top and pants, cotton-rich, breathable winter base layer for kids.
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Size
3-5 YRS6-8 YRS9-11 YRS12-13 YRS
Vendor: Daisy Dreamer

Daisy Dreamer Girls Thermal Underwear Set Long Sleeve Top And Long Jane Pants Cotton Rich

Regular price £7.00 GBP
Sale price: £7.00 GBP Regular price: Sale: -0%
In stock, 2900 units
Six-pack boys' Cotton Stretch Boxer Shorts by Sock Stack with breathable fabric, comfortable waistband, and assorted styles for ages 5-13.Six-pack boys' Sock Stack cotton stretch boxer shorts with breathable fabric, comfortable waistband, assorted styles, moisture-wicking.
Pack of 5 boys' organic cotton boxer shorts by Sock Stack, breathable, durable, stretchy underwear for kids ages 5 to 13.Pack of 5 Sock Stack boys' organic cotton stretch boxer trunks, breathable and durable underwear for kids ages 5-13.
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Size
5-6 YRS7-8 YRS9-10 YRS11-12 YRS13 YRS
Vendor: Sock Stack

Sock Stack Pack Of 5 Boys Organic Cotton Stretch Boxer Trunks For Kids Ages 5-13

Regular price £9.00 GBP
Sale price: £9.00 GBP Regular price: Sale: -0%
In stock, 256 units
BLACK BLACK
Heatwave Thermalwear boys' winter thermal long sleeve top and pants set in charcoal black, cozy brushed base layer for warmth.Heatwave Thermalwear boys' winter thermal underwear set with long sleeve top and pants in charcoal black, brushed insulating base layer.
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Size
3-5 YRS6-8 YRS9-11 YRS12-13 YRS14-15 YRS

Heatwave Thermalwear Boys Winter Thermal Long Sleeve Top And Pants Set Charcoal Black Brushed Base Layer Warmth

Regular price £12.00 GBP
Sale price: £12.00 GBP Regular price: Sale: -0%
In stock, 96 units

Children's Underwear from Sock Stack Boys Girls Cotton Boxers Briefs Vests and Thermalwear

Discover everyday essentials for growing children with the Sock Stack Children’s Underwear collection, bringing together soft cotton rich underwear, boxers, trunks, briefs, vests and comfortable base layers for boys and girls. Boys can choose from cotton blend boxers, cotton rich boxer shorts, stretch trunks and loose fit woven boxers in practical multipacks, with assorted colours, fun prints, football, army and gamer designs to suit different ages and everyday preferences. For girls, explore soft cotton underwear briefs, comfortable shorts, seamless racer back bralettes and crop top styles, along with assorted colours and patterns designed for school days, everyday wear and active lifestyles. The collection also includes children’s cotton vests, available in multipacks for boys and girls, making them useful for school uniforms, layering and everyday comfort. Prepare for colder weather with Heatwave Thermalwear and Daisy Dreamer thermal underwear sets, including long sleeve tops, long johns, thermal leggings and brushed base layer clothing for boys and girls, ideal for winter, camping, skiing and outdoor activities. With cotton rich and stretch fabrics, practical waistbands, breathable designs and a wide selection of multipack options, Sock Stack makes it easy to stock up on children’s underwear essentials for growing wardrobes. Whether you are looking for boys’ boxer shorts, girls’ cotton briefs, kids’ vests, children’s trunks, girls’ bralettes or thermal underwear for winter, find practical everyday styles for different ages and needs. Shop children’s underwear online from Sock Stack with free UK delivery on orders over £22 and fast UK dispatch on every order.