There is nothing more frustrating than in-ear headphones that keep sliding or slipping out of your ears. Design-wise, these little ear pieces are made to stay in your ear, but finding a pair that actually does this consistently day in day out is a challenge.

The Sony MDR-EX500SL and EX700SL will fit snugly into your ear. They are made to stay inside. They come with a leather carrying pouch. From the Japanese translation, it seems that the top of the line model has some noise-canceling features included by using multiple layer diaphragms made from high polymer materials which reduce the vibrations while maintaining high sound quality. The 500SLs are available for about $90 and the 700SL will cost you about $319.That's quite a steep price to pay for in-ear headphones with no active noise-canceling capabilities.

[via CrunchGear, photos by Impress]
as much as i don't like the earplugthingies slipping out, they make my ears HURT. so in a way, them slipping out is a relief ;)
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These have been around since 2007 and a quick Google search shows the700sl available for $179...
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What's with the cinnamon roll in the one image?!?
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