【Perfect Fit】 We recommend size L (for heights 165cm-180cm, weights 60kg-80kg). It achieves an optimal fit according to gender and body type, providing solid support for both men and women. This posture supporter is perfect for those aiming to correct slouching and improve posture. 【Lightweight, Thin, and Discreet Comfortable Design】 Using extremely thin, high-density mesh fabric, it's completely invisible under clothing. It's breathable and comfortable to use throughout all four seasons. You can easily use it in various situations, such as desk work, studying, driving, and light exercise. 【Scientific Support for Ideal Posture】 The ergonomic W-shaped back design firmly supports the back. It draws the shoulder blades inward, guiding you to an ideal posture with a naturally open chest. Adjustable straps and high-adhesion Velcro allow for fine adjustments to your preferred intensity. 【Easy to Put On and Take Off, and Easy to Care For】 Simple design: just put it on from both shoulders and fasten the Velcro. There are no troublesome steps. It's washable, so you can maintain cleanliness while using it daily. Even beginners can easily start a beautiful posture habit. 【Gentle on the Body with a 10-Minute Habit】 When using it for the first time, we recommend starting with about 10 minutes and gradually increasing the time as your body gets used to it. You can adjust it according to your individual body type and how you feel, so you can continue without overdoing it, making it ideal for those who want to achieve beautiful posture with ease.