I can stand for hours in them without my feet hurting. I was worried about ordering these as sometimes kids shoes are narrow and stiff. I have no explanation why these batteries would be defective as Ive never experienced this in the past with Duracell. I have a slightly wide foot but these fit great. These things attenuate a significant amount of external noise. After purchasing multiple types of slippers over the years, I have learned most are made for very, VERY wide feet. 5 right foot and so the wool outer rim is touching my skin, causing irritation. Sonido potente e impactante, y no se desinflan a volumenes altos! I hooked up a POWERTEC 70198 2-1/2-Inch Flexible Dust Collection Hose 36-Inch Long into a 2. I purchased a pair of black slippers several months ago and clicked on them to "purchase again".