
Best selling Sleeping bags from Sea To Summit
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1. Sea To Summit Boab -9°C Synthetic Sleeping Bag
The Boab -9°C synthetic sleeping bag from Sea To Summit is specially designed for cold nights and offers excellent thermal performance. Made from resource-efficient materials, this sleeping bag combines comfort and functionality in a thoughtful design. The mummy shape ensures optimal thermal insulation and reduces space requirements, while the synthetic filling provides good breathability. Ideal for outdoor enthusiasts who do not want to compromise on restful sleep even in low temperatures. The Boab sleeping bag is a sustainable choice for those who value environmental friendliness without sacrificing performance.
- Made from resource-efficient materials
- Optimal thermal insulation through mummy shape
- Breathable synthetic filling for high comfort.

2. Sea To Summit Trek -9°C Down Sleeping Bag
The Trek -9°C Down Sleeping Bag from Sea To Summit is specifically designed for cold conditions, combining comfort and functionality. With a thoughtful design, it is ideal for camping and van life adventures during winter. The sleeping bag offers excellent thermal insulation thanks to its high-quality down filling, which has a loft power of 650 cuin. The construction ensures that warmth is efficiently retained while minimizing weight and pack size. Weighing 1.436 kg, this sleeping bag is easy to transport and can be packed into a compact volume of 20 liters. Features include a two-way zipper, a draft collar, and a hood that provide additional protection against the cold. The Trek -9°C Down Sleeping Bag is therefore an excellent choice for anyone who does not want to compromise on comfort even in frosty temperatures.
- Comfort temperature down to -3°C, limit temperature down to -9°C
- 100% down filling with Responsible Down Standard
- Two-way zipper for easy handling
- Draft collar and hood for additional cold protection
- Lightweight at 1.436 kg and compact pack volume of 20 liters.

3. Sea To Summit Reactor Lightweight Liner Long
The Reactor Lightweight Liner Long from Sea To Summit is a practical travel sleeping bag that provides extra warmth. With a length of 198 cm, it is ideal for taller individuals and offers ample space for a comfortable sleep. The sleeping bag is made from 100% polyester, making it lightweight and durable. The integrated hood adds extra comfort and warmth, while the compact design allows for easy transport during travel. This sleeping bag liner is perfect for camping trips or as an additional layer in a sleeping bag to enhance warmth. It is an excellent choice for anyone who values lightness and functionality.

4. Sea To Summit Hamelin Synthetic Long -1°C
The Hamelin Synthetic Long -1°C by Sea To Summit is a comfortable mummy sleeping bag suitable for a variety of temperatures. With its synthetic insulation, it offers excellent thermal protection while being lightweight and easy to transport. The sleeping bag is designed to meet the needs of outdoor enthusiasts who value comfort and functionality. The water-repellent outer material protects against moisture, ensuring that the sleeping bag can be used even in challenging conditions. Ideal for camping, hiking, or other outdoor activities, the Hamelin Synthetic Long -1°C provides a reliable solution for overnight stays in the great outdoors.
- Water-repellent outer material for added protection
- Lightweight synthetic insulation for optimal thermal performance
- Comfortable mummy cut for freedom of movement
- Suitable for temperatures down to -1°C.

5. Sea To Summit Women's Trek Women's -1°C Down Sleeping Bag
The Women's Trek -1°C Down Sleeping Bag from Sea To Summit is a thoughtfully designed winter sleeping bag that combines comfort and functionality. It is ideal for camping and van life, providing excellent thermal performance in cold temperatures. Weighing only 1.418 kg, it is lightweight and easy to transport, while the high-quality down filling with a loftiness of 650 cuin ensures optimal insulation. The sleeping bag is rated for temperatures down to -1°C and features a draft collar and hood for added protection against the cold. The two-way zipper allows for flexible handling and ventilation, further enhancing sleep comfort. This sleeping bag is an excellent choice for anyone who doesn't want to compromise on a restful night's sleep, even in the colder months.
- Comfort temperature down to -1°C, ideal for winter camping
- High-quality down filling with 100% down content
- Lightweight design at only 1.418 kg
- Two-way zipper for flexible ventilation
- Includes draft collar and hood for additional cold protection.

6. Sea To Summit Spark 7°C Down Sleeping Bag
If you weigh only a few grams but still value a restful sleep, the Spark might be the right sleeping bag for you. Filled with RDS-certified 850+ Fillpower goose down treated with a PFC-free Ultra-Dry down treatment, the Spark features a technical hood and a zipper draft tube to retain warmth. For comfort, it has a super breathable 10-denier lining, while a 10D outer material with a PFC-free DWR coating, along with a highly water-repellent hood and foot section, keeps wind and condensation at bay. The model with a full-length zipper can be paired with an equivalent Women's Spark, providing couples with the same level of comfort.
Pro
- Pack size and weight
- Very light

7. Sea To Summit Reactor Fleeceweight Liner Long
The Reactor Fleeceweight Liner Long from Sea To Summit is an innovative sleeping bag liner designed to significantly enhance the thermal performance of your sleeping bag. With an additional warmth of up to 8 °C, this liner ensures a comfortable sleeping environment even in cooler temperatures. Made from heat-retaining Thermolite fleece, it not only provides comfort but also offers an eco-friendly solution as it is made from recycled materials. The practical technical hood and integrated arm openings allow for optimal freedom of movement, while the zippers facilitate easy access. Additionally, the liner reliably protects your sleeping bag from dirt, extending its lifespan. Ideal for travelers and outdoor enthusiasts who value warmth and functionality.
- Increases sleeping bag warmth by up to 8 °C
- Made from heat-retaining Thermolite fleece
- Eco-friendly, recycled material
- Integrated arm openings for freedom of movement
- Protects the sleeping bag from dirt.

8. Sea To Summit Ember 7°C Down Quilt
The Ember 7°C Down Quilt from Sea To Summit is a high-quality down sleeping bag designed for summer conditions. Weighing just 423 grams, it offers an excellent combination of lightness and warmth. The filling is made of 100% down with a loftiness of 850 cuin, providing outstanding insulation. This sleeping bag is ideal for outdoor enthusiasts who value comfort and functionality. It features a hood and a practical two-way zipper that allows for flexible ventilation. The Ember 7°C Down Quilt is not only functional but also environmentally conscious, as it complies with the Responsible Down Standard. It offers a comfort temperature of up to 11 degrees Celsius, making it perfect for mild nights outdoors.
- Made from 100% down with 850 cuin loft for optimal thermal insulation
- Two-way zipper for flexible ventilation and easy access
- Hood for added comfort and warmth
- Complies with the Responsible Down Standard for sustainable sourcing.

9. Sea To Summit Reactor Midw. Liner - S Beluga
The Reactor Midweight Liner from Sea To Summit is a versatile sleeping bag liner designed specifically for travelers who need extra comfort and warmth. Weighing only 330 grams, it is lightweight and easy to carry. The quick-drying material ensures that the liner is ready for use again quickly, even in damp conditions. The stretch comfort allows for unrestricted freedom of movement, while the warmth boost of up to 6 °C provides pleasant nights. This liner is ideal for use in combination with a sleeping bag or as a standalone hut sleeping bag, optimizing nights spent outdoors or in mountain huts. With a maximum body height of 170 cm, it is a practical choice for many users.
- Lightweight at just 330 g for easy handling
- Quick-drying material for rapid readiness
- Stretch comfort for unrestricted freedom of movement
- Warmth boost of up to 6 °C for added comfort.

10. Sea To Summit Breeze Sleeping Bag Liner Mummy with Drawcord
Whether on trekking tours and in tents as an extra layer of warmth or as a hygienic layer in hostels: the Inlett Breeze Liner Mummy from Sea to Summit ensures dry, fresh sleeping comfort. The stretchy and incredibly soft knit material Coolmax EcoMade, made from synthetic fibers and TENCEL, offers maximum freedom of movement and efficiently wicks away moisture. This way, even in high humidity, you can enjoy a dry sleeping experience, and thanks to HeiQ-Fresh technology, the liner remains odor-free even after extended use. The foot box with drawstring can be opened or closed as needed; the upper entry is comfortably accessible thanks to the snap buttons. This also creates two armholes, allowing you to sit in your tent while wearing the liner and enjoy your morning muesli with an extra layer of warmth. For weight-conscious travelers, this liner may be a bit too large and heavy, but for those who want to indulge in extra comfort while traveling and backpacking, the Inlett Breeze Liner Mummy is an essential accessory.
