Casual Underwear
Comfortable, well-fitting underwear is the foundation of every outfit, literally. Briefs, thongs, hipsters, boy shorts, seamless styles in cotton, modal, lace, and performance fabrics. We carry options from M&S, ASOS, and specialist brands across a wide range of sizes. Many featured brands offer inclusive sizing and sustainable fabrics. Use our filters to browse by style and fabric, or tell the AI stylist what you need.
Products
482 products
New Look
New Look Brown Ribbed Thong
£7.99
British Boxers
British Boxers Dusty Pink Bamboo Full Briefs Pack of Four
£32.00
Yours
Yours Plus Size Black Paisley Print Full Briefs 5-Pack
£14.99
Marks & Spencer
M&S 2 Pack Printed Period High Leg Knickers Carbon
£12.00
New Look
New Look Cream Crochet Lace Thong
£2.00
British Boxers
British Boxers Off-White Bamboo Full Briefs Pack of Four
£32.00
Yours
Yours Plus Size Black Ditsy Butterfly High Waisted Full Briefs 5
£14.99
Marks & Spencer
M&S 5pk Microfibre Full Briefs Grey Mix
£12.00
New Look
New Look Tan Microfibre No VPL Short Briefs
£4.49
British Boxers
British Boxers Black Bamboo Full Briefs Pack of Four
£32.00
Yours
Yours Plus Size Black & Pink Star Print High Leg Knickers 5 Pack
£14.99
Marks & Spencer
M&S 3pk Jasmine Lace Miami Knickers White
£10.00
New Look
New Look Cream Satin & Lace Brazilian Briefs
£8.99
British Boxers
British Boxers Light Green Brushed Cotton Pyjama Trousers
£65.00
Yours
Yours Plus Size Blue Floral Butterfly Print Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 3 Pack Jasmine Lace Trim High Leg Knickers Dark Raspberry
£10.00
New Look
New Look Light Pink Satin Look Micro Lace Thong
£3.99
British Boxers
British Boxers Heather Snow Light Grey Cotton Zip-up Hoodie
£69.00
Yours
Yours Plus Size Black & White Floral Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 5pk Microfibre Full Briefs Brown Mix
£12.00
New Look
New Look Black Satin Look Micro Lace Brazilian Briefs
£4.49
British Boxers
British Boxers Dark Pink Bamboo Full Briefs Pack of Four
£32.00
Yours
Yours Plus Size Black Floral Full Briefs 5 Pack
£14.99
Marks & Spencer
M&S 7 Pack Cotton Rich High Leg Knickers Light Cream
£16.00
Showing 312 of 482
Frequently Asked Questions
What underwear style is most comfortable for daily wear?▾
Highly personal, but mid-rise hipsters or briefs in cotton or modal are popular for all-day comfort. Seamless styles work best under fitted clothing. The key is finding something that doesn't dig in, ride up, or bunch. Our size guides per brand help get this right first time.
How often should I replace underwear?▾
Every 6-12 months depending on wear frequency. Signs: stretched elastic, faded colour, thinning fabric, loss of shape. Having 15-20 pairs in rotation ensures none are overworked. This is one category where new rather than preloved makes sense.
What underwear works best under tight-fitting clothes?▾
Seamless, bonded-edge underwear in a nude matching your skin tone. Thongs eliminate visible lines entirely. Laser-cut edges lie flat. Avoid lace edges, thick seams, or decorative details under figure-hugging garments, they show through more than you'd expect.