Sea To Summit Sleeping bags

Planning to sleep under the stars? Whether it's for a high-mountain trek, a night bivouacking by a lake, or a van trip, your sleeping bag is your best ally for a warm night. The Sea to Summit brand offers sleeping bags designed with passion, innovation, and expertise. Whether you're a beginner hiker or an experienced explorer, you'll find a sleeping bag suited to your size, your need for warmth, and your sense of comfort. From hydrophobic down to an ergonomic hood, optimized zipper, and moisture-wicking treatment, everything is designed to ensure your night is as soft as it is restorative.

Why choose a Sea to Summit sleeping bag?

When you go trekking, bivouacking, on an expedition or even camping, the choice of sleeping bag is crucial for a good night's sleep. With Sea to Summit, you have a valuable ally. A brand specializing in high-performance outdoor equipment, designed for adventure. Sea to Summit sleeping bags combine innovative materials, ergonomic design and high-level insulation to adapt to all seasons and weather conditions. It is a brand that meets the expectations of demanding hikers as well as occasional campers.

The Benefits of Down Sleeping Bags

The down used in Sea to Summit sleeping bags is treated to be hydrophobic. This means they retain their insulating power even in humid environments. Lightweight, ultra-compressible and with an excellent weight-to-warmth ratio, they reduce the bulk in your backpack while ensuring comfortable nights, even at altitude. When trekking, every gram counts, so these sleeping bags are designed to combine comfort, warmth and performance.

Technical characteristics of the Sea to Summit models

Each model is designed to meet the specific requirements of outdoor enthusiasts: two-way anti-trapping zip, adjustable hood, cold-resistant collar, water- repellent treatment on the outer side and zip with insulated flap. In addition, the sizes are adapted to all body shapes, with regular, long or women's versions. If you are looking for a high-performance sleeping solution for your next trek, Sea to Summit sleeping bags are a strategic choice.

Sea to Summit Sleeping Bag Range

Introducing the Spark and Ascent models

Spark sleeping bags are the brand's lightest and most compact models. Designed for trail running, bikepacking, or fast treks, they offer an exceptional weight-to-comfort ratio. Their high-quality down and ergonomic hood ensure a good night's sleep, even at high altitudes.

Ascent sleeping bags, on the other hand, are more spacious, perfect for classic camping or multi-day treks in varied conditions. They have a full zip allowing them to be opened like a duvet, and their water-repellent treatment makes them particularly resistant to humidity.

Comparison of limit and comfort temperatures

The Spark SpI is an ultra-light model designed for summer nights, with a comfort temperature around 9°C, while the Spark SpIV goes down to -8°C, ideal for 3-season bivouacs. On the Ascent side, there are models adapted to extreme cold, some of which are close to 0°C in comfort temperature, perfect for nights in the mid-mountains.

For winter expeditions or high-altitude treks, Sea to Summit also offers models specifically designed for extreme conditions. The Alpine model is an excellent example of a cold-weather sleeping bag, designed to withstand negative temperatures down to -18°C in comfort temperature. Its 850+ Loft goose down with hydrophobic treatment guarantees constant warmth even in the most humid environments. Thanks to its enveloping hood, its two-way zipper with insulated flap, and its mummy shape, it perfectly retains body heat. The weight remains controlled for a bag in this category, which makes it an ideal companion for mountaineering or winter trekking. Find this type of product in our selection of cold-weather sleeping bags.

Also discover the entire selection of trekking sleeping bags and camping sleeping bags, to choose the model that corresponds to your use, your size, your warmth needs and your budget.

Tips for maintenance and storage

How to wash and store your sleeping bag

Down requires careful care. To wash your Sea to Summit bag, use a mild down soap and avoid excessive wringing. Tumble dry on low heat with tennis balls to maintain loft.

For storage, avoid keeping it compressed for too long, choose a large, breathable storage bag. Synthetic models like some Ascent models are easier to maintain, but the Down has better durability with good gestures.

Tips to maximize the lifespan of your bag

• Air it well after each night of use while camping or trekking
• Avoid storing it in a humid place
• Protect it with a waterproof cover when trekking in rainy climates

To complete your sleeping system, also consider Sea to Summit mattresses or their ultra-light tents.

Sea to Summit Sleeping Bag FAQs

When should I use a down sleeping bag instead of a synthetic sleeping bag?

Down is ideal for backpacking, trekking, and hiking because it's lighter, warmer, and more compact. It's best suited for drier areas or for users who can protect it well from moisture. Synthetic down is easier to care for and performs well even when wet, making it ideal for humid climates or less intensive use.

Is a Spark sleeping bag spacious?

The Spark range is optimised for weight and compactness, which means it fits more snugly. If you like to move around in your sleeping bag, the Ascent or another semi-rectangular cold weather sleeping bag might be a better fit. The pre-shaped hood and fitted zipper, however, provide excellent thermal insulation, even with a slimmer waist.