Big Agnes Ultralight Recovery Sleeping Bag Liner, Long

Enhanced Recovery for the Trail Ahead
Designed for high-performance backcountry adventures, the Big Agnes Ultralight Recovery Sleeping Bag Liner helps you sleep longer, recover faster, and wake up ready to move. This ultralight sleeping bag features integrated CELLIANT bioceramic recovery technology, clinically shown to promote improved sleep and accelerate post-exertion muscle recovery. Whether you're pushing miles on a thru-hike or camping off-grid, this Big Agnes Recovery liner boosts your sleep system's performance without adding bulk.

Recovery-Focused, Thermoregulating Performance
The moisture-wicking sleep liner is made from soft, recycled polyester infused with CELLIANT fibers, which convert body heat into infrared energy and reflect it back to your body. This process has been proven to enhance local circulation, improve cellular oxygenation, and support better sleep quality. The liner also helps maintain optimal temperature-whether you run warm or cold, making it an ideal thermoregulating sleeping bag for any season or sleep preference.

Packable Protection and Versatility
Beyond performance, this compact anti-odor sleeping bag protects your sleeping bag from dirt, sweat, and body oils, extending its lifespan and reducing wash frequency. A minimalist cinch-hood closure allows easy temperature control, and the liner is reversible to fit both right- or left-zip bags. With a soft hand feel, durable seams, and packable design, it's a versatile option that can also stand alone for warm-weather overnights or lightweight travel.