A British store is launching a range of underpants for left-handed men, an innovation it says will save them both time and embarrassment in front of the porcelain.

The new range, by UK-based Hom, will have a horizontal opening instead of a vertical slit accessed from the right-hand side, breaking a tradition that has lasted for 75 years.

"In our view, this is a vital step toward equality for left-handed men," said Rob Faucherand of Debenhams store.

Almost 10 percent of British men are believed to be left handed but men''''s Y-fronted underpants have traditionally had a right-handed opening from the time they were invented in 1935.

"As a result," Debenhams said, "left-handed men have to reach much further into their pants, performing a Z shaped maneuver through two 180 degree angles before achieving the result that right handed men perform with ease."

Previously, it added, boxer shorts, with an adaptable, ambidextrous opening in the middle, have been the underpants of choice for left handed men.

The new pants mean that left handed men can finally go to the bathroom as quickly and efficiently as their right-handed colleagues, the store said.

"Switching the opening from vertical to horizontal may sound like a small step, but it''''s the major breakthrough that many have been waiting for," added Faucherand.