En agua y en montaña van genial They are not totally noise-canceling but do filter out some noise in the classroom. I wear 10W which was not so easy to find so I buy the shoes at Walmart in my size. These are awesome headphones. I was looking to make a home gym since all the gyms in my area are closed due to the pandemic, and everything arrived as described. I have enough room for a longer charging cable too! If you like modern look, this is better with no frills smooth structure. Just remember to push out some and toss it. The parts came scratched up but it is not worth it to take the time to send it back and get another one and have to put it all back together again. I installed these myself in about 45 minutes.