Backpack: -300 denier polyester, 210 denier polyester -Drawstring top closure -Interior hanging pocket with hook and loop closure for easy access to valuable -Spacer mesh comfort straps with built-in grab handle and reflective trim -Lightly padded back for structure and comfort -Reflective webbing tab on slip pocket and side mesh beverage pocket and reflective FedEx logo -Dimensions: 20"h x 15"w x 5"d; Approx. 1,500 cubic inches Shirt: -3.8-ounce, 100% polyester interlock body with PosiCharge technology -3.8-ounce, 100% polyester honeycomb texture insets with PosiCharge technology -Tag-free label -Set-in sleeves -Reflective detail on left & right sleeve and lower back