Saddle Up With Our Summer Adventure Guide—Shop Now
Home Page

Detail Images

  • Therm-a-Rest - Vesper Quilt: 32 Degree Down -

Current Color

Therm-a-Rest Vesper Quilt: 32 Degree Down

Temporarily Out Of Stock

Don't get too bummed. This item is on the way and will be available for purchase as soon as it rolls into the warehouse.

Can't wait? Consider one of the other Down Sleeping Bags we have in stock.

View Similar Products

Vesper Quilt

The Therm-a-Rest Vesper Quilt replaces your bulkier, heavier sleeping bags on minimalist-minded, summery backpacking trips. It weighs a little less than a pound, and can pack down to the size of a water bottle. Therm-a-Rest used down insulation with the highest rill rating (900) to ensure the loftiest warmth and the smallest compressibility. This down also boasts a Nikwax hydrophobic treatment to retain its lofty warmth in moisture-riddled environments. In wet places that would usually crinkle the down until you're cold, this quilt's down has the potential to stay warm and comfy in humid, rainy weather. As if that wasn't enough, Therm-a-Rest added a ThermaCapture lining to reflect your own body heat for even better warmth. SynergyLink connectors keep your sleeping pad underneath you so you don't slip onto the tent's floor at night, and the snap neck closure works with the insulated footbox and perimeter side baffles to make sure you stay in the quilt and drafts can't go in.
  • Ultralight quilt replaces sleeping bags on summer backpacking trips
  • 41F temperature range suitable for most summery outings
  • 900-fill down insulation keeps weight below a single pound
  • Nikwax hydrophobic treatment keeps down lofty in moisture
  • ThermaCapture lining reflects body heat for better warmth
  • SynergyLink connectors integrate quilt to sleeping pads
  • Stuff sack packs down to the size of a water bottle
  • Storage sack included
  • Perimeter side baffles, snap neck closure, and insulated footbox reduce unwanted drafts
  • Item #CAS00ES

[shell] 10D nylon ripstop, DWR [liner] 10D nylon ripstop, ThermaCapture
900-fill down, Nikwax hydrophobic treatment
Max User Height
[regular] 6ft [long] 6ft 6in
Shoulder Circumference
[regular] 58in [long] 61in
Hip Circumference
[regular] 51in [long] 54in
Foot Circumference
[regular] 37in [long] 40in
Pad Retainer
SynergyLink Connectors (removable)
Fill Weight
[regular] 9oz [long] 10oz
European Norm Comfort Rating
European Norm Lower Limit Rating
Storage Sack
Stuff Sack
Stuff Size
5 x 6in
Claimed Weight
[regular] 15oz [long] 1lb 1oz
Recommended Use
backpacking, mountaineering
Manufacturer Warranty

Tech Specs

California Proposition 65


This product can expose you to chemicals including Toluene, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to

What do you think about this product?


>Rating: 3

The jury’s still out.

I've used it several times
True to size
Size Bought
5` 10"
224 lbs

Pulled it out of the box and held it up to a window and every compartment was only half full. Called Thermarest Custy Serv & got a really great guy... cold dryer, tennis balls, vigorous (but not violent) shaking and a lot of pinching and pulling the clusters and voila! Just barely full compartments. Tested on back porch on a night with dropping temps wearing long underwear, a super thick winter hat, and and using an R5 winter pad. It’s toasty warm all through the 40’s but then after that it falls off a cliff... at 4 am & 36*F I was too cold to even think about sleeping and went inside. Tried again another night inside a SOL thermolite bivi, same clothes, same hat, super warm, zero condensation inside, sopping wet dew all round my yard. Thermally great but back to the inconvenience of a sausage casing survival style sleep system. PROS: 1) Best fitting foot box ever. 2) perimeter baffle is fantastic-seals super well 3) neck collar/drawstring best of any quilt and on par with my custom hand made winter bag. 4) The shell fabric just awesome in every way. CONS: 1) The pad straps fall off way too easily & are not very useful side sleeping with knees bent. 2) when you add the weight of winter hat winter pad, & bivi sack there is ZERO weight savings for me but even with the extras it is super compact somthing I really like a lot. MY BOTTOM LINE FOR NOW: buy the 20*F version there just isn’t enough down in the 32*F model to make sense or work like it should; It’s a fantastic shell design that’s undermined by being underfilled.

>Rating: 5

Vesper Quilt

I've used it several times
True to size
Size Bought
6` 1"
205 lbs

Loved it. Best nights of sleep I've ever had in the Sierra's. Spent four nights in the Kings Canyon area in late June. We had relatively warm nights, except for the night we spent at about 10,500'. Even that night I just layered clothing and slept like a baby. I turn a lot and side sleep and loved how the quilt stayed on me, but allowed me to spread out, move around, roll over etc. Coldest night was maybe 30-35. Warm nights in the 50's and I slept in a t-shirt. The bag packs super light, and very small. Just a little bigger than a standard Nalgene bottle.