What is the Therm-a-Rest Vesper 32F/0C Long Quilt?
The Vesper is Therm-a-Rest's ultralight performance quilt, designed for hikers and adventurers who prioritise speed, efficiency, and pack space in the backcountry. Using premium down insulation, featherlight fabrics, and a modular design, it balances comfort and adaptability at a fraction of the weight of a traditional sleeping bag. Perfect for summer backpacking, thru-hikes, bikepacking trips, and lightweight alpine missions, the Vesper 32F/0C keeps weight low without sacrificing essential warmth.
What is it made of?
Insulation
The Vesper is filled with premium 900-fill Responsible Down Standard (RDS)-certified goose down. Exceptionally light and warm, this down offers one of the best warmth-to-weight ratios available. The clusters are treated with a PFAS-free hydrophobic finish, enabling them to resist moisture, dry faster, and retain loft in damp conditions. With such a high fill power, the quilt achieves outstanding compressibility, packing down to a minimalist size without compromising insulation.
RDS certification guarantees ethical sourcing, ensuring that the geese are never force-fed or live-plucked and that strict animal welfare standards are upheld throughout the supply chain.
Shell and Lining
Encasing the down is a 10-denier nylon ripstop shell — remarkably lightweight yet engineered for durability. The ripstop weave prevents snags or abrasions from forming or expanding into larger tears, enhancing the quilt's long-term resilience. The PFAS-free Durable Water Repellent (DWR) finish sheds light moisture such as dew or condensation without relying on harmful chemical treatments.
Inside, the soft nylon lining feels smooth against the skin and stands up to repeated packing and extended use, contributing to the quilt's ultralight packability and durability.
What are its features?
Box-Baffled Construction
The Vesper utilises box-baffled construction to maximise down loft and eliminate cold spots. Full-perimeter side baffles and a draw-cord neck closure help seal out drafts, keeping warmth securely contained during cooler nights.
SynergyLink Connector
The quilt includes Therm-a-Rest's removable SynergyLink connector, which attaches the quilt to your sleeping pad to prevent slipping, block side drafts, and improve overall thermal performance. On warm nights, the connector can be removed, allowing the quilt to function more like a traditional blanket.
Packability and Weight
Thanks to its ultralight down and streamlined fabrics, the Vesper compresses into an impressively compact size. The included stuff sack packs down to just 14 × 20 cm (5.5 × 8 in), making it suitable even for minimal-volume packs. Despite the compact size, the quilt delivers dependable warmth down to 0°C (32°F).
Temperature Ratings
Independently tested to EN standards, the Vesper provides a comfort rating of 5°C (41°F) and a lower limit of 0°C (32°F). This makes it ideal for summer trips and warmer shoulder-season adventures where weight savings and packability are paramount.
Features:
- Premium 900-fill down — for maximum warmth-to-weight efficiency
- Ultralight design — for fast-and-light adventures
- Box-baffled construction — for consistent loft and warmth
- SynergyLink connector — for securing the quilt to your mattress
- Draft protection — for sealing in warmth with baffles and neck closure
- Great packability — for minimalist compression and storage
- Eco-conscious build — for PFAS-free treatments and ethical sourcing