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O’Neill clothing has become synonymous with the world of surfing and laidback sports culture across the globe. UnderU is home to an impressive selection of top O’Neill swimwear and clothing, featuring the latest and greatest designs from the new season collections. With styles emblazoned with the brand’s iconic ocean wave logo, our O’Neill swim shorts are expertly designed to be comfortable, durable and quick drying. Choose from a wide selection of standout prints, colours and fabrics to find your surfing style, or explore our wider range of O’Neill clothing including lightweight T-shirts, hoodies and shorts for year-round designer style.

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The O’Neill brand is the world’s go-to surf culture brand, and is widely credited with inventing the wet-suit. Jack O’Neill opened his first surf shop out of his garage on the Great Highway in San Francisco, California – just a few yards away from his favourite surfing spot.

O’Neill Swim Shorts

In recent years, O’Neill has branched into more general men's swimwear and other clothing. Here at UnderU we have handpicked a fantastic selection of men's O'Neill swim shorts, flip flops and other swimwear, all of which is designed to be durable, water-repellent and fast-drying for ultimate surf-worthy performance as well as style. We love the brand’s use of bright colours demonstrated in our latest collection of O’Neill swim shorts, with each of the vibrant prints serving to evoke memories of long summer days spent on hot beaches.

O’Neill Clothing

Sitting naturally alongside our O’Neill swimwear collection, our latest range of O’Neill clothing here at UnderU demonstrates this popular brand’s ability to design trendsetting styles both on and off the beach. O'Neill always draws inspiration for its T-shirts, shorts and hoodies from the very surf culture that they are famous for (and had a part in creating!), making them the perfect choice for any holiday wardrobe as well as the everyday street ensemble.