Here are the different sizes available for Shapeheart magnetic pouches:

Size M: up to 14.7cm: suitable for Iphone 7 or X, Samsung S6, Google Pixel
Size XL: up to 16.5 cm: suitable for Iphone XR to 14, Huawei from P10 to P40, Samsung A03s, S8, Google Pixel 6
Size XXL: up to 17.2 cm: suitable for Iphone "Pro Max" and "Plus", Huawei "Plus" and "X", Samsug note 10 to 20, Zflip 3