vanki Streak Reflective Vest for Running Cycling Walking Made of soft, lightweight, breathable mesh material. Reflective vest designed for running ,cycling ,walking 360 reflectivity and visibility Size:20"x12.75 Usually, you will get it actually in 9~19 days, If you are in the USA and the item is NOT Fulfilled by Amazon. the item will be sent to you by USPS with shipping information from China. The estimated delivery time offered by Amazon is not the real time. Your patience is highly appreciated. Hope you will receive your item soon and enjoy using it. The side with elastic and good for Kids