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Sleeping Bags

Sea to Summit Spark Ultralight 18F

Introducing the Sea to Summit Spark Ultralight 18F, the ultimate sleeping bag for adventurers seeking lightweight and warm gear for their outdoor expeditions. Designed with meticulous attention to detail, this product combines advanced technologies and premium materials to provide exceptional performance in cold weather conditions.

Crafted with the utmost precision, the Spark Ultralight 18F weighs a mere 1 lb. 3 oz., making it one of the lightest sleeping bags on the market. Its ultralight construction doesn’t compromise functionality or warmth, making it an ideal choice for hikers, backpackers, and mountaineers who value every ounce of their gear. Whether you’re embarking on an extended thru-hike or a weekend camping trip, the Spark Ultralight 18F will become your trusted companion.

The Spark Ultralight 18F is specifically designed to keep you warm and comfortable in temperatures as low as 18 degrees Fahrenheit. This impressive temperature rating is achieved through its premium 850+ loft Ultra-Dry Down™ insulation. This high-quality down is responsibly sourced and treated with a water-repellent coating to ensure that it remains lofty, stable, and dry even in damp conditions. It is also lightweight and highly compressible, providing maximum warmth without adding unnecessary bulk to your backpack.

Sea to Summit’s meticulous engineering is evident in the Spark Ultralight’s design. The mummy shape with a contoured hood and foot box offers snug and efficient thermal performance, minimizing heat loss and giving you a restful night’s sleep. The anatomical shape allows for better heat retention while minimizing unnecessary space, ensuring that the sleeping bag hugs your body snugly without feeling restrictive.

To further enhance warmth, this sleeping bag utilizes a 10D Pertex Quantum® shell fabric. This ultra-lightweight fabric is designed to provide excellent resistance to wind and water, keeping you protected even in the harshest conditions. The fabric’s breathability also prevents overheating, ensuring that you maintain a comfortable temperature throughout the night.

Practicality and convenience were at the forefront of the Spark Ultralight’s design process. The bag features a full-length, two-way YKK zipper, allowing for easy entry and ventilation options. The angled foot box also ensures that your feet rest in a natural, relaxed position, reducing strain and promoting a more comfortable sleep. Additionally, the small internal pocket provides a secure place to store small essentials, such as a headlamp or a phone.

When it’s time to pack up your gear and hit the trail, the Spark Ultralight’s compressibility makes it a breeze. It compresses into an incredibly small size, taking up minimal space in your backpack and allowing you to maximize your carrying capacity.

The Sea to Summit Spark Ultralight 18F exceeds industry standards by offering exceptional warmth, weight, and functionality. It is thoughtfully engineered for those who demand the best gear for their outdoor adventures. Whether you’re spending chilly nights under the stars or summiting treacherous peaks, the Spark Ultralight 18F will provide you with the warmth, comfort, and reliability you need to fully enjoy your outdoor experience.

Invest in the Sea to Summit Spark Ultralight 18F sleeping bag, and elevate your outdoor adventures to new heights. With this premium product, you’ll be able to go further, lighter, and more comfortably, allowing you to fully immerse yourself in the beauty of the great outdoors.

Read more about Sea to Summit Spark Ultralight 18F at Find the specs, the best price, and compare it to other similar products.


Weight 1 lbs 8 oz
Product Brand Sea to Summit
Sea to Summit Sleeping Bags

Added: September 25, 2023

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Sea to Summit Spark Ultralight 18F

Sea to Summit Spark Ultralight 18F

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