It can store a telephoto lens of about 400mm. It can be attached to a belt or bag. I used it about 3 or 4 times when taking pictures outdoors. There is no dirt or fading, and I don't think it feels like it's been used much. Weight: 100g Internal dimensions: 90 x 90 x 180mm *When packing, the product will be slightly crushed, but I don't think there will be any creases. Please understand. Thank you for looking.