Purchased in November 2023. It didn't fit my waist well, so I haven't used it much and it's relatively clean, but there is a dark stain on the right side of the seat. However, there is some fabric caught in the Velcro. This is a POLBAN hip seat made with breathable mesh material. - Model Name: POLBAN BASIC new model - Color: Black - Material: Mesh - Design: Hip seat Thank you for looking.