Copper Spur UL3 Bikepack FootprintDescription The Big Agnes Copper Spur UL3 Bikepack Footprint is a protective ground cover made for the Copper Spur UL3 Bikepack tent. It helps protect the bottom of the tent and adds an extra waterproof layer between the tent floor and the ground. It also enables a lightweight Fast Fly setup when used with the tent fly, poles, and stakes. Big Agnes lists it as compatible with the Copper Spur UL3 Bikepack and the Copper Spur UL3. Features Compatible