Hello, Thank you for choosing Madmext! According to the height and weight information you shared (155 cm, 55 kg), **size S (36)** will be suitable for you in this product. If you prefer a looser, more relaxed and extra comfortable fit in the hip and waist area, you can also consider **size M (38)**. The **Pink Adjustable Waist Striped Pocket Wide Leg Women's Trousers** model you have reviewed, thanks to its wide leg cut, does not squeeze the leg area, it offers a very flowing and comfortable use. This cut will give you a great freedom of movement and create a very stylish silhouette, all while accommodating your leg thickness. Additionally, the adjustable waist of the product helps you to completely adjust the waist fit according to your own comfort. Due to your height, the leg length of the trousers may be a little long for you; however, with a little tailor's touch, you can easily adjust it according to your height. If you have a different question, we would be happy to help. We wish you pleasant shopping! Madmext Team