Therm-a-Rest Vesper 20F/-6C Down Quilt vs REI Co-op REI Magma Trail 30 Quilt

Editorial Team
Last modified at May 28, 2026
When it comes to backpacking quilts, the Therm-a-Rest Vesper 20F/-6C Down Quilt and the REI Co-op REI Magma Trail 30 Quilt are two of the most popular options on the market. Both quilts offer excellent warmth, packability, and comfort, but they have distinct differences that may make one a better fit for your specific needs. In this comparison, we'll break down the key categories and specifications to help you make an informed decision.

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Therm-a-Rest Vesper 20F/-6C Down QuiltREI Co-op REI Magma Trail 30 Quilt
Therm-a-Rest Vesper 20F/-6C Down QuiltREI Magma Trail 30 Quilt
Weight

Regular: 19 oz Long: 21 oz

Medium: 20.3 oz Medium Wide: 22.3 oz Long: 22.3 oz Long Wide: 24.5 oz

Fill Power

900

850

Dimensions

Regular: 79 × 49 × 43 × 40.5 in Long: 83 × 52 × 46 × 43.5 in

Medium: 73.2 × 50 in Medium Wide: 73.2 × 54.3 in Long: 80 × 50 in Long Wide: 80 × 56.6 in

Fill Type

PFAS-Free Hydrophobic Goose Down, RDS

water-resistant goose down

Temperature Rating

20°F

30°F

Warranty

Limited lifetime warranty

1-year satisfaction guarantee / limited warranty

Baffle Construction

Box Baffled

variable baffle spacing with vertical baffles in torso

Shell Fabric

10D Nylon Ripstop

15-denier recycled ripstop nylon

Pad Attachment System

SynergyLink™ Connectors

2 pad cords

Hood

No hood

No hood

Size

Regular: 72 in Long: 78 in

Medium: Fits up to 71 in Medium Wide: Fits up to 71 in Long: Fits up to 77 in Long Wide: Fits up to 77 in

Fabric Denier

10D

15

Baffle Design

Perimeter Side Baffles

variable baffle spacing with vertical baffles in torso

Comfort

Therm-a-Rest Vesper 20F/-6C Down Quilt

4.1/ 5.0

REI Magma Trail 30 Quilt

4.6/ 5.0

Comfort is crucial for a good night's sleep in the backcountry. A comfortable quilt allows for better rest, which is essential for recovery and enjoyment on long backpacking trips. The REI Magma Trail 30 Quilt excels in this category with a higher comfort rating, offering more mobility and a generous foot box that makes it feel less confining. Users appreciate the draft collar and the overall cozy feel, which helps reduce the feeling of being trapped. The Therm-a-Rest Vesper, while still comfortable, has some complaints about cold spots and a less generous fit, making it slightly less comfortable for side sleepers or those who move around a lot. The practical verdict is that if you prioritize comfort and a roomier feel, the REI Magma Trail 30 Quilt is the better choice.

Warmth

Therm-a-Rest Vesper 20F/-6C Down Quilt

3.8/ 5.0

REI Magma Trail 30 Quilt

4.9/ 5.0

Warmth is a critical factor for backpacking quilts, especially in colder conditions. The REI Magma Trail 30 Quilt outperforms the Therm-a-Rest Vesper in this category with a near-perfect warmth rating. It features water-resistant down and an effective draft collar that seals in warmth, making it suitable for temperatures below its 30°F rating with additional layers. The Therm-a-Rest Vesper, while warm, has a lower warmth rating and some users report needing extra layers to stay warm in colder conditions. The REI Magma Trail's outstanding loft and impressive insulation make it a clear winner for those who need reliable warmth. If staying warm is your top priority, the REI Magma Trail 30 Quilt is the better option.

Durability

Therm-a-Rest Vesper 20F/-6C Down Quilt

4.8/ 5.0

REI Magma Trail 30 Quilt

4.2/ 5.0

Durability ensures your quilt can withstand the rigors of backpacking and last for many trips. The Therm-a-Rest Vesper stands out with its lightweight 10 denier ripstop nylon and durable water repellent coating, earning it a higher durability rating. Users report that it remains in excellent condition even after multiple seasons of use. The REI Magma Trail, while still durable, uses a 15 denier fabric that is slightly less robust. The practical verdict is that if you need a quilt that can handle tough conditions and frequent use, the Therm-a-Rest Vesper is the more durable choice.

Ease Of Use

Therm-a-Rest Vesper 20F/-6C Down Quilt

4.3/ 5.0

REI Magma Trail 30 Quilt

4.6/ 5.0

Ease of use is important for quickly setting up and adjusting your quilt in various conditions. The REI Magma Trail 30 Quilt excels in this category with its intuitive cord system and adjustable girth, making it easy to use and adjust while inside the quilt. The Therm-a-Rest Vesper, while still easy to use, has a slightly more complex attachment system that some users find less convenient. The practical verdict is that if you value simplicity and ease of adjustment, the REI Magma Trail 30 Quilt is the better choice.

Versatility

Therm-a-Rest Vesper 20F/-6C Down Quilt

3.9/ 5.0

REI Magma Trail 30 Quilt

4.7/ 5.0

Versatility allows a quilt to adapt to different temperatures and sleeping styles, making it useful in a variety of conditions. The REI Magma Trail 30 Quilt is more versatile with its adjustable toggles and foot box, allowing it to be used in varying temperatures and pad widths. The Therm-a-Rest Vesper, while versatile, has fewer adjustment options and is better suited for specific conditions. The practical verdict is that if you need a quilt that can adapt to different environments and preferences, the REI Magma Trail 30 Quilt is the more versatile option.

Packability

Therm-a-Rest Vesper 20F/-6C Down Quilt

4.8/ 5.0

REI Magma Trail 30 Quilt

4.4/ 5.0

Packability is essential for backpackers who need to save space and reduce weight in their packs. The Therm-a-Rest Vesper excels in this category with its ability to compress down to the size of a water bottle and its lightweight design. The REI Magma Trail, while still packable, is slightly bulkier and heavier. The practical verdict is that if minimizing pack size and weight is a priority, the Therm-a-Rest Vesper is the better choice.

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Conclusion & Final Verdict:

After comparing the Therm-a-Rest Vesper 20F/-6C Down Quilt and the REI Co-op REI Magma Trail 30 Quilt, it's clear that both have their strengths. The REI Magma Trail 30 Quilt is the better choice for those who prioritize comfort, warmth, ease of use, and versatility. It offers a more comfortable and warmer sleeping experience with its generous foot box, effective draft collar, and adjustable toggles. On the other hand, the Therm-a-Rest Vesper excels in durability and packability, making it ideal for backpackers who need a lightweight and durable quilt that can withstand tough conditions and save space in their packs.

Choose the REI Magma Trail 30 Quilt if you value comfort and warmth, and opt for the Therm-a-Rest Vesper if durability and packability are your top priorities.

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