Pop the left one in, same. The traction is very food and prevents slipping. Overall a decent product. Recomendo esse fone. The quality is 5-star and they didnt rip or tear at all during the workout. Controls are difficult to use. And what upsets me even more is that the difference in price is souly based on its color for this latest model he ordered for me. This should be industry standard, but Sony can only do 1 at a time. I buy a new pair every one to two years. For instance, the low-end Philips headphones (cheaper, too), sound much better.