BIG AGNES Copper Spur HV UL3 Bikepack FootprintBIG AGNES Copper Spur HV UL3 Bikepack Footprint is sized to fit the newest 2021 model of Big Agnes Copper Spur HV UL 3 Bikepack tent (sold separately). Footprint helps protect the floor of the tent from abrasion, mud and water and extend the life of your tent floor. The Big Agnes footprint also enables you to pitch a lightweight, Fast Fly shelter while leaving the tent body behind. The Fast Fly configuration requires the footprint, tent fly, poles,