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
British Boxers
British Boxers Navy Cotton Oversized Hoodie
£69.00
New Look
New Look Black Seamless Shaping High Leg Thong
£9.99
Yours
Yours Plus Size Pink Floral Lace Front Full Briefs
£7.99
Marks & Spencer
M&S Rose Quartz Microfibre Full Briefs 5-Pack
£12.00
British Boxers
British Boxers Pale Blue Cotton Lounge Sweatshirt
£52.00
New Look
New Look Tan High Waisted Micro Thong
£4.79
Marks & Spencer
M&S Dark Cream Satin Tanga Brazilian Knickers
£9.60
British Boxers
British Boxers Dark Blue Cotton Zip-up Hoodie
£69.00
New Look
New Look Plus Size Black Brazilian Briefs Set
£4.79
Marks & Spencer
M&S 5pk Cotton Rich Printed High Leg Knickers Dusty Green
£12.00
British Boxers
British Boxers Navy Cotton Lounge Sweatshirt
£52.00
New Look
New Look White Floral-Lace Brazilian Briefs
£5.99
Marks & Spencer
M&S 5 Pack Microfibre Hipster Knickers Bitter Chocolate
£12.00
British Boxers
British Boxers Dark Green Cotton Lounge Sweatshirt
£52.00
New Look
New Look White Floral Lace Thong
£2.99
Marks & Spencer
M&S Bitter Chocolate Microfibre High Leg Knickers 5-Pack
£12.00
British Boxers
British Boxers Women's Pack of Three Multicolor Hipster Briefs
£28.00
Marks & Spencer
M&S Rose Quartz Cotton Lycra® High Leg Knickers 5-Pack
£12.00
British Boxers
British Boxers Multicolor Full Briefs Four Pack
£32.00
British Boxers
British Boxers Heather Grey Cotton Joggers in Mid Grey
£55.00
Marks & Spencer
M&S Fresh Blue Lace Miami Knickers 2 Pack
£12.00
British Boxers
British Boxers Teal Cotton Zip-up Hoodie for Women
£34.50
Marks & Spencer
M&S Lace & Mesh Miami Knickers in Ivory
£14.00
British Boxers
British Boxers Bright Pink Cotton Lounge Sweatshirt
£52.00
Showing 456 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.