Naturally correct your posture and shape your upper arms in your daily life! You can achieve ideal posture and toned upper arms. The strong pressure tightens your upper arms, creating slim and beautiful arms. The design integrates the shoulders and arms, allowing you to maintain good posture and straighten your back even while desk-working or using your smartphone. The uneven special knit on the back of the fabric massages your upper arms as you move. It supports a slimmer appearance even for those who are not good at exercise. The material uses spandex, which has excellent elasticity and durability. Comfortable without feeling constricted. Because it's a thin inner layer, it's unnoticeable under your clothes. Recommended for those with poor posture such as rounded shoulders, a hunched back, and tech neck, or those concerned about sagging upper arms. Product Name: Upper Arm Shaper Material: 90% Nylon, 10% Spandex Colors: Black, Beige, Pink Sizes: M, L, XL (See product image for details) ※This product is not for medical use. ※The specifications, appearance, and product information of this product are subject to change without notice. ※Due to production lots, the dimensions, shape, and color of the product image may differ slightly from the actual product.