Available for immediate purchase. Letter Pack (Not anonymous delivery, but express delivery) Worn a few times for testing. ◼️If you wish for anonymous delivery, it will be an additional 150 yen, so please comment before purchasing. Sliet MEN Core Training Slippers for Men Maintain posture and strengthen your core. Feel the sensation of being pulled backward with heel-weighted stance! When you stand with your core engaged, most people feel like they're about to fall backward. That's how much we usually walk with a forward-leaning posture. Sliet is a slipper that strengthens your core by maintaining the correct posture and using your muscles. The slope of the sole makes you conscious of shifting your body's center of gravity backward, engaging your lower abdomen, hips, and calves, leading you to the correct posture. The three-dimensional insole fits your feet. It's designed to prevent slipping off and reduce foot fatigue. These are the "Sliet" slippers that align your core. Color: Navy Size: 25.0 - 27.0cm Feel the sensation of being pulled backward with heel-weighted stance. Slippers that maintain beautiful posture and strengthen your core by using your muscles. Worn a few times for testing. Sliet MEN training slippers for men, core slippers, diet slippers, core training, muscle training slippers, lower abdomen, training, diet items, shape, diet, health sandals, health slippers, indoor, stylish. Slippers that make you conscious of your core just by wearing them and align your core.