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Down Sleeping Bags

Using responsibly sourced Ultra-Dry Down, our down sleeping bags offer superior warmth and packability.

SHOP Ascent

A favourite among campers and hikers, Sea to summit’s range of award-winning lightweight down sleeping bags offer the best warmth-to-packability ratio, comfort, and longevity.

Our down sleeping bags feature premium high lofting RDS certified ULTRA-DRY Down. This permanent nano-level water-repellent treatment applied to our down, protects it from external moisture and condensation from inside the bag, ensuring they are high performing in both dry and damp conditions. 

100% of the down used in our sleeping bags and quilts is independently certified to the Responsible Down Standard (RDS). The RDS certifies down against animal welfare requirements and tracks it from the source to the final product. The purchase of RDS certified products demonstrates demand for better animal welfare practices in the down and feather supply chain. Sea to Summit is certified to the RDS.


Constructed using high quality lightweight fabrics, each of our down sleeping bags have been specially engineered and shaped for the designed end use whilst maximising comfort and warmth, without sacrificing versatility or packability. Our purposefully constructed baffles keep insulation exactly where you need it, preventing cold spots and ensuring you stay warm during the night. 

Whether you’re looking for a technical minimalist down sleeping bag for fast and light activities like bikepacking and thru-hiking where space and weight are a premium, or if you’re looking for a down sleeping bag that’s versatile enough for multi-season adventures, explore our range of exceptionally lightweight, warm and packable down sleeping bags.