Thermarest Vesper 20F Quilt



  • $199.95
  • $255.00
  • $320.00
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Product Description

For those that carry nothing but the essentials, the 19-ounce Vesper is your solution for a lighter pack and better nights at camp.

Featuring unrivaled packability and featherweight design, the Vesper 20F/-6C quilt provides no-frills camp comfort. The quilt uses thermally-efficient box baffled construction to maximize warmth and comfort for a high-performance, ultralight piece. 

Bundle Discount: Order a One, Two, or Solo Tarp, and get an additional 10% off an UberLite pad or Vesper quilt!
Enter code "SNUGGLEBUNDLE" at checkout.

  • 900-fill Nikwax Hydrophobic Down™: Stays drier and maintains loft 60 times longer than untreated down.
  • Unrivaled Packability: Lightweight materials and precise design allow for a smaller packed size than ever before.
  • Box Baffled Construction: Uses mesh walls to maximize loft and minimize cold spots.
  • SynergyLink™ Connectors: Integrate the bag with a mattress for optimal efficiency and comfort; removable for versatility.
  • Draft Protected: Perimeter side baffles, snap neck closure and insulated footbox eliminate unwanted drafts.
  • Responsible Down Standard Certified: Certification that ensures that the waterfowl in the down supply chain are treated humanely.


Regular 19 oz. (12 oz. fill weight)

Long 21 oz. (13 oz. fill weight)

Recommended Temperature

Comfort 32F

Limit 20F

Dimensions - Regular

Width 58"

Length 75"

Height 4.5"

Girth, Shoulder 58"

Girth, Hip 51"

Girth, Foot box 37"

Packed dimension 5.5" x 8"

Fits Up to 6'0"

Dimensions - Long

Width 61"

Length 79"

Height 4.5"

Girth, Shoulder 61"

Girth, Hip 54"

Girth, Foot box 40"

Packed dimension 5.5" x 8"

Fits Up to 6'6"

Shell Fabric 10D Nylon RipStop w/ DWR

Lining Fabric 10D Nylon RipStop

Fill Material 900 Fill Goose Nikwax Hydrophobic Down, RDS

How should I store my Vesper Quilt?

Sleeping bags must be stored dry and loose (not compressed) in order to extend the life of the bag. All Therm-a-Rest® sleeping bags come with a compartmental storage sack. For long term storage, the sleeping bag should be stored with the sack fully extended. For short-term storage or when shipping, you can use the smaller draw cord loop in the center of the sack to create a tighter container that saves space.

How do I clean my Vesper Quilt?

Hydrophobic Down Care Instructions:

All hydrophobic down treatments wash out over time, and washing is hard on all down. Extend the life of your bag by spot cleaning with a damp sponge, and only machine washing when necessary.


Hand wash or machine wash in a large capacity, front loading washing machine, using 3 oz. of Nikwax(r) Down Wash(tm). Select cold water and a gentle/delicate cycle with two rinses. We recommend an additional spin cycle as well to extract as much water as possible before drying.

DO NOT dry clean. DO NOT bleach. DO NOT iron.


Hang dry your bag whenever possible. This can be a long process (24-48 hours or more), but this is by far the best way to get the longest life from your down. Use a well-ventilated, low-humidity environment. Hand-tease or shake out your bag gently to break-up down clumps, and flip it often to help speed the process.

If you need to dry your bag faster, tumble dry in a large dryer on low heat. As your bag gets drier, it will begin to loft and can actually fill the dryer chamber, preventing it from tumbling. This can cause hot spots and even melt the bag's shell, so check it often for overheating and visually inspect frequently to make sure it's tumbling. When you check it, feel for clumps of wet down and either shake the bag gently or hand-tease the clumps apart to redistribute down. Throwing in 3-5 tennis balls can help agitate the bag, breaking up those wet down clusters to speed dry times.

Is my Vesper Quilt under warranty?

Therm-a-Rest® offers a Limited Lifetime Warranty for most products including all sleeping bags. Your sleeping bag is guaranteed without time limit against defects in materials and workmanship. Thermarest also offers repair services for damages not covered under warranty. You can read more about the Thermarest Warranty here.

Gossamer Gear accepts returns on clean and unused products, within 30 days of receipt, for a full refund of the purchase price. To qualify for a refund, returned products must be in unused, new condition*, with all tags and labels still attached. 

Sleeping bags should not be compressed to a size smaller than the box in which we shipped it to you originally. Compressing the down for continuous days during shipping could result in damage to the item, and render the item not returnable. Please include a copy of your receipt.

*PLEASE NOTE: We have received returned products that could not be considered “new condition” due to stains or odors.  Some skin care, hair care, or home care products may inadvertently stain fabrics.  Some cooking odors or odors from other gear/clothing may absorb into the product. Please take care until you are certain you are keeping your products, as we may not be able to refund an item that is not sellable as new to another customer.

You can read more about our return policy here.