For those whose aggressive approach to packability and shaving weight is rivaled only by their focus on the next great mission, the Hyperion 20 sleeping bag checks all the boxes.

• Super soft 10d nylon ripstop shell and lining

• RDS certified 900 FP hydrophobic goose down

• Removable Synergy Link Connectors that help keep the user anchored to their pad

• Mixed baffle construction; box baffle on top, sewn-through on the bottom to hit the right balance of weight savings and thermal efficiency

• Weighs a mere 1lb 4oz