Big Agnes Copper Spur UL4 Footprint Asphalt 4 Person. 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 and stakes. Specifications for Big Agnes Copper Spur UL4 Footprint: Manufacturer: Big Agnes Color: Asphalt Fabric/Material: Nylon Ripstop Tent Accessory Type: Footprints Application: Camping Weight: 10 oz Packed Size: 8x5x2 in Features of Big Agnes Copper Spur UL4 Footprint Compatible with Copper Spur UL4 tents featuring Tiplok Tent Buckles Fast Fly setup available - stake out your footprint insert your tent poles into corners drape your fly over the top and buckle it in for an even lighter smaller packing setup Fully compatible with Copper Spur UL4 models made after 2020 Package Contents: Big Agnes Copper Spur UL4 Footprint Big Agnes TFFCSUL425: Copper Spur UL4 Footprint Asphalt 4 Person