Denim mega brand Diesel has exploded onto the underwear and swimwear scene in the last two years Diesel's Fresh and bright block multi coloured trunks and briefs are the main stay of this collection. But each season Diesel releases lots of new fashion styles which have a limited lifespan - so grab them when you see them! Diesel underwear and Diesel's swimwear collections are a shot in the arm, young, fresh, sexy and hot.