Navy and pink stretch waist pouch with adjustable strap, perfect for running and walking. - Color: Navy and pink - Style: Waist pouch - Material: Stretch material - Features: Adjustable strap - Usage: For running, walking Thank you for viewing. I purchased this a few years ago and wore it a few times. There are no noticeable stains or fraying. The strap is adjustable + elastic, with a buckle for ease of use. There is some slight looseness in the elastic of the strap. Approximate measurements (measured by hand): The length of the back part is 25cm. It has considerable elasticity. In photo 3, I have taken a picture with an iPhone SE 3rd generation inside, but you can probably fit other items like a key case as well. I plan to ship it by post, with waterproof packaging. Only those who understand that this is a used item, please consider purchasing.