Boost 4 Down-filled Foot Muff - Harvest Gold
BOOST 4 — More Warmth, More Adventure
When the night gets colder than expected, BOOST 4 has your back — and your feet. This featherlight footbox liner, weighing just 90 grams, boosts the limit temperature of any sleeping bag by a remarkable 4°C, giving you the warmth and confidence to push further into the unknown.
Built with a tough rip-stop shell and lining, BOOST 4 shrugs off the rigors of the trail without sacrificing comfort. The easy-to-adjust draw cord with a sewn-in cord stopper lets you seal in precious warmth in seconds, even with frozen fingers. Every detail is designed for those who chase horizons: crafted from 100% recycled fabrics and filled with RDS-certified European Duck Down, it offers uncompromising performance.
On warm summer nights, trust your sleeping bag alone. But when the air grows thin and the temperature dips, add BOOST 4 and stay out longer, dream deeper, and wake up stronger. Because adventure shouldn't stop when the cold sets in — it should only get better.
• Boosts the limit temperature of any sleeping bag by 4°C
• Tough rip-stop shell and lining
• Draw cord with sewn-in cord stopper for easy adjustment
• Made of 100% recycled fabrics
• Filled with RDS-certified European Duck Down
• Contains no intentionally added PFAS
Original: $113.92
-65%$113.92
$39.87
Description
BOOST 4 — More Warmth, More Adventure
When the night gets colder than expected, BOOST 4 has your back — and your feet. This featherlight footbox liner, weighing just 90 grams, boosts the limit temperature of any sleeping bag by a remarkable 4°C, giving you the warmth and confidence to push further into the unknown.
Built with a tough rip-stop shell and lining, BOOST 4 shrugs off the rigors of the trail without sacrificing comfort. The easy-to-adjust draw cord with a sewn-in cord stopper lets you seal in precious warmth in seconds, even with frozen fingers. Every detail is designed for those who chase horizons: crafted from 100% recycled fabrics and filled with RDS-certified European Duck Down, it offers uncompromising performance.
On warm summer nights, trust your sleeping bag alone. But when the air grows thin and the temperature dips, add BOOST 4 and stay out longer, dream deeper, and wake up stronger. Because adventure shouldn't stop when the cold sets in — it should only get better.
• Boosts the limit temperature of any sleeping bag by 4°C
• Tough rip-stop shell and lining
• Draw cord with sewn-in cord stopper for easy adjustment
• Made of 100% recycled fabrics
• Filled with RDS-certified European Duck Down
• Contains no intentionally added PFAS
