Transform your Big Agnes Copper Spur UL2 into the ultimate ultralight shelter system with this precision-engineered footprint that weighs just 148g and packs down to the size of a paperback book. Designed specifically for post-2020 Copper Spur UL2 models, this footprint features the innovative Tiplok buckle system that enables the legendary Fast Fly setup – simply stake out the footprint, insert your poles, drape your fly, and buckle in for a shelter that's lighter and faster to pitch than your full tent. Whether you're grinding out miles on a backpacking adventure or need to shave every gram for a bikepacking expedition, this footprint delivers bomber 1500mm waterproof protection while maintaining Big Agnes's commitment to environmental responsibility with PFAS-free treatments and solvent-free seam sealing – because the best gear protects both you and the places you love to explore.