Free UK Delivery: Orders Over £50

About Us

UnderU has long been established as THE place to go online for premium branded men's underwear, men's swimwear, clothing, men's socks & accessories. We are pretty old in terms of online retail, having started out in 1999, but still feel young at heart!

  • 40+ leading men's designer brands
  • Leading brands like Emporio Armani underwear, Calvin Klein Boxers, Polo Ralph Lauren swim shorts, Dolce & Gabbana underwear, Diesel men's briefs, Hugo Boss Boxer Trunks, Ted Baker, Tommy Hilfiger, and many more
  • Trading online since 1999
  • Trusted by 100,000+ customers
  • 10,000+ products, across 1,250+ product lines
  • Including 500 Clearance Outlet lines with 40%-80% discounts

Men's Designer Underwear and Men's Swimwear Brands

We are very proud to be selected by so many top brands to be allowed to sell their collections online. Our aim is to bring the very best designer Underwear, Swimwear, Socks, Clothing & Accessories brands to our customers. We have been adding a number of new brands recently, including Gant, Hanro, Tommy Hilfiger underwear, Wolsey, Calvin Klein Men's Briefs, Diesel Underwear, Ted Baker, Emporio Armani Boxers, Hom, Hugo Boss underwear and many more. But we are always on the look-out for new great brands, so do let us know if there is another top brand that should be sitting on the UnderU website.

Men's Underwear & Men's Swimwear History at UnderU

We started life as a little online retailer way back in 1999, back at a time when Britney Spears and Billy Ray Circus were dominating the UK charts!! We have enjoyed 19 years serving more than 160,000 customers over this time. We have recently re-doubled our focus on offering customers the best brands at the very best prices, and are busy adding more brands and building out our offering. In February 2013, we were delighted to be able to launch our brand new website, one which we hope will both delight our loyal customer base and welcome on new ones.

UnderU's Customer Service Team

Customer Service is at the heart of our business, and we aim to offer our customers a premium experience, in line with the quality of brands we offer. Our Customer Services team is made up of Christina, Kelly, Nicoletta, Florin, Bill, Richard & Simon, and feel free to contact us at

And don't forget to check out our UnderU Voucher Codes section here.