Cinder Down Quilt

$219.00 - $239.00


Ultralight, super-packable summer quilt with multiple configurations

The Cinder is an ultralight, super-packable quilt insulated with 750+ Loft ULTRA-DRY Down™ protected by waterproof/breathable NanoShell™ fabric. A drawcord pulls the foot end together into a footbox for cooler nights, and three adjustable straps keep the quilt secured to your sleeping mat.

Quilts are not for everyone, but many weight-conscious backpackers choose a quilt over a sleeping bag for warmer-weather use. The lack of a zipper and hood reduce weight and packed volume, and the broad cut provides real freedom of movement. Sea to Summit quilts have an additional advantage: the QuiltLock system means that the Cinder can be attached to a compatible Sea to Summit sleeping bag, adding a whole extra season’s warmth to your sleep system.

The premium 750+ Loft down is super-warm and compressible and the ULTRA-DRY™ water-repellent treatment protects its loft from external moisture and condensation from inside the bag. ULTRA-DRY Down™ retains over 60% more loft and absorbs 30% less moisture than untreated down and it dries 60% faster. To help combat moisture and condensation, the Cinder uses 20D Nylon waterproof/breathable NanoShell™ fabric.

Sleeping pad sold separately.


• 20D Nylon waterproof/breathable NanoShell™ fabric protects again wind and external moisture
• 20D Nylon fabric lining that is soft to the touch, lightweight and breathable
• RDS 750+ Loft ULTRA-DRY Down lofts up to provide warmth but packs down really small
• Versatile press stud and adjustable strap system secures the quilt to your mat, sealing in warmth (mat sold separately)
• Drawcord cinches the foot end into a footbox for cooler conditions
• Sewn-through quilted construction reduces weight and bulk
• Connect two quilts together to make a double—Cinder, Glow and/or Ember Quilts (sold separately)
• QuiltLock™ System securely connects your Cinder quilt to any Sea to Summit sleeping bag for extra warmth
• Includes a Sea to Summit Ultra-Sil™ Compression Sack and large storage cell

QuiltLock™ System
The QuiltLock™ system uses the snap locks located at the shoulder and foot end of Sea to Summit sleeping bags plus the quilt footbox / quilt straps to secure a quilt to the sleeping bag.
This adds thermal performance and versatility to your sleep system: your integrated quilt now works for ultralight summer adventures and turns your three-season bag into a four-season sleep system.

Nano Shell™ is a 20 Denier Nylon fabric with a water-shedding DWR finish on the exterior and a microporous PU coating on the interior. This highly breathable, highly water-resistant, windproof shell fabric is used on the Sea to Summit Alpine sleeping bags and Cinder quilts, where it protects the down from external moisture even during very wet conditions.

ULTRA-DRY Down 750+ Loft
The second highest-lofting down used in any of Sea to Summit’s sleeping bags. 750+ Fill Power indicates that one ounce (30g) of down will re-expand to over 750 cubic inches after compression. Higher loft means that less down can be used to achieve the same temperature rating – important for performance sleeping bags. The loft and down quality/composition are independently tested by the International Down and Feather Laboratory (IDFL) – a copy of the certification is supplied with every Sea to Summit sleeping bag.
The down is responsibly sourced and RDS certified and treated with the environmentally-friendly Ultra-Dry Down™ treatment.

Responsible Down Standard
All Sea to Summit sleeping bags use only down which is certified according to the Responsible Down Standard (RDS). The RDS is helping shift the entire down and feather industry towards more humane animal rearing and handling practices. Overseen by the industry leading Textile Exchange, the RDS requires independent, third-party assessments of all aspects of animal rearing and handling throughout the entire supply chain. By purchasing only down that meets the audited requirements of the RDS, you can have confidence that each phase of the collection process has been completed with the welfare and ethical treatment of waterfowl in mind.
To learn more about RDS, visit

Recommended Accessories