Sea to Summit Spark -1C Long Down Sleeping Bag

The Sea to Summit Spark -1C Long is a featherlight down sleeping bag that packs into a 4.3-litre compression sack while keeping you comfortable near freezing point. It is the go-to choice for backpackers, hut-to-hut trekkers, and climbers who measure every gram.

Advantages

Weighing very little and compressing to the size of a large grapefruit, this long-cut sleeping bag is a master of minimisation. The RDS-certified 850+ loft ULTRA-DRY Down™ provides outstanding warmth-to-weight performance, while the ultra-fine 10D nylon shell and liner feel silky and are surprisingly durable. A half-length left-hand zipper saves weight and makes nighttime access easy, and the tapered mummy shape reduces excess volume so your body heat is retained efficiently.

Suitable for

• Fast backpacking and long-distance hiking
• Bicycle touring and canoe expeditions
• Alpine climbing and mountain huts
• Summer and 3-season camping

Key specifications

• EN Comfort temperature (women): 4°C
• EN Limit temperature (men): -1°C
• EN Extreme temperature: -16°C
• Fill: 300 g RDS 850+ Loft ULTRA-DRY Down™
• Shell and lining: 10D nylon
• Style: Tapered mummy, half-length left zipper
• Fits users up to 198 cm tall
• Shoulder / hip / foot girth: 158 / 138 / 108 cm
• Packed volume: 4.3 liters
• Includes Ultra-Sil™ compression sack and large storage cell

Recommendations

For maximum insulation, pair this sleeping bag with a Sea to Summit insulated pad and a liner for colder nights. Store it loosely in the provided mesh storage cell, and use the compression sack only for travel.