Therm-a-Rest Boost 650 wide-open bag shows extra space for side sleeping and movement.
Therm-a-Rest Boost 650 side-zip design enables easy venting while staying warm.
Therm-a-Rest Boost 650 WarmZip activation demonstrates insulation reallocation for added warmth.
Therm-a-Rest Boost 650 long warm collar detail highlights draft protection around the neck.
Therm-a-Rest Boost 650 packable with stuff sack for compact backpacking setup.
Therm-a-Rest Boost 650 hood detail shows adjustable hood for snug warmth.
Therm-a-Rest Boost 650 shoulder insulation emphasizes zoned warmth around the core area.
Therm-a-Rest Boost 650 hydrophobic down remains warm in damp conditions.
Therm-a-Rest Boost 650 outer shell made from recycled nylon feels soft and durable.
Therm-a-Rest Boost 650 eco-friendly materials with PFAS-free DWR for mindful design.
Therm-a-Rest Boost 650 wide-open bag shows extra space for side sleeping and movement.
Therm-a-Rest Boost 650 side-zip design enables easy venting while staying warm.
Therm-a-Rest Boost 650 WarmZip activation demonstrates insulation reallocation for added warmth.
Therm-a-Rest Boost 650 long warm collar detail highlights draft protection around the neck.
Therm-a-Rest Boost 650 packable with stuff sack for compact backpacking setup.
Therm-a-Rest Boost 650 hood detail shows adjustable hood for snug warmth.
Therm-a-Rest Boost 650 shoulder insulation emphasizes zoned warmth around the core area.
Therm-a-Rest Boost 650 hydrophobic down remains warm in damp conditions.
Therm-a-Rest Boost 650 outer shell made from recycled nylon feels soft and durable.
Therm-a-Rest Boost 650 eco-friendly materials with PFAS-free DWR for mindful design.

Therm-a-Rest Boost 650 32F/0C Down Sleeping Bag, Large — Adjustable Shape & Lightweight Warmth

Smart design for customizable warmth and comfortComfort on the trail isn’t one-size-fits-all, and Therm-a-Rest designed the Boost 650 to adapt...
Vendor: Therm-a-Rest
Product type: Sleeping Bag
$694.27
$694.27
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Subtotal: $694.27

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Request within 30 days of delivery. Conditions and exclusions apply. Return policy

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Therm-a-Rest Boost 650 wide-open bag shows extra space for side sleeping and movement.

Therm-a-Rest Boost 650 32F/0C Down Sleeping Bag, Large — Adjustable Shape & Lightweight Warmth

$694.27
Therm-a-Rest Boost 650 wide-open bag shows extra space for side sleeping and movement.
Therm-a-Rest Boost 650 side-zip design enables easy venting while staying warm.
Therm-a-Rest Boost 650 WarmZip activation demonstrates insulation reallocation for added warmth.
Therm-a-Rest Boost 650 long warm collar detail highlights draft protection around the neck.
Therm-a-Rest Boost 650 packable with stuff sack for compact backpacking setup.
Therm-a-Rest Boost 650 hood detail shows adjustable hood for snug warmth.
Therm-a-Rest Boost 650 shoulder insulation emphasizes zoned warmth around the core area.
Therm-a-Rest Boost 650 hydrophobic down remains warm in damp conditions.
Therm-a-Rest Boost 650 outer shell made from recycled nylon feels soft and durable.
Therm-a-Rest Boost 650 eco-friendly materials with PFAS-free DWR for mindful design.

Therm-a-Rest Boost 650 32F/0C Down Sleeping Bag, Large — Adjustable Shape & Lightweight Warmth

$694.27
Description
Description

Smart design for customizable warmth and comfort

Comfort on the trail isn’t one-size-fits-all, and Therm-a-Rest designed the Boost 650 to adapt to you. In its semi-rectangular mode, the bag offers generous space for side sleeping, shifting, and relaxing—ideal if you prefer to move during the night. When conditions call for more warmth, zip the WarmZip center zipper to cinch insulation around your body and reduce internal space. This is not a claim of guaranteed warmth, but it can translate to up to 10F/6C of added warmth in suitable conditions.

Key warmth and comfort features include a puffy draft collar, a draft tube along the entry line, and a cinchable hood. The arm holes give easy access to the WarmZip without opening the side zipper, so you can ventilate or sleep with your arms out while maintaining warmth. A two-way side zipper lets you vent around your torso or feet.

What makes Boost 650 different

  • Adjustable shape and inclusive sizing, with Wide options, for shoulders, movers, and a roomier feel beyond traditional mummy bags
  • WarmZip Tech enables targeted insulation placement to boost warmth by up to 10F/6C
  • 650-fill hydrophobic down provides warmth while repelling moisture in damp backcountry weather
  • Zoned insulation concentrates down where heat matters most (top and shoulders) and minimizes it where less efficient
  • 100% recycled nylon shell and liner offer a soft feel with PFAS-free DWR for a lighter environmental footprint
  • Durable YKK anti-snag zippers with arm-hole access for convenience and fewer snags

Real-world warmth and versatility

  • Backpacking-ready: lightweight, packable, and capable in variable conditions
  • Side sleepers or restless sleepers benefit from extra space and adjustable warmth
  • Wet or damp nights are more forgiving thanks to hydrophobic down and DWR
  • Ventilation is easy with the two-way zipper and arm-hole access

Specs at a glance

  • 650 fill hydrophobic down (RDS-certified) with zoned insulation
  • Shell and liner: 100% recycled nylon; PFAS-free DWR coating
  • Weight: 2 lb 7 oz (1.10 kg); Dimensions: 85 x 32.5 in (216 x 82.5 cm)
  • Packed size: 13 x 7.5 in (33 x 19 cm); includes storage bag and compression stuff sack
  • Available in large length with Wide options for broader shoulders

FAQ

Q: What is WarmZip, and how does it affect warmth?

A: WarmZip is a center zipper that reduces internal space and tucks insulation around you, potentially increasing warmth by up to 10F/6C.

Q: Is the Boost 650 suitable for different sleeping styles?

A: Yes. Its adjustable shape, wide sizing, arm holes, and venting options support a range of sleeping preferences.

Read more
Shipping & Return
Shipping & Return

Shipping

Orders ship across Canada. The shipping policy lists 1–2 business days for processing, followed by estimated delivery after dispatch: 3–7 business days for most Canadian provinces, or 7–14 business days for remote and Northern communities. These are estimates, not delivery guarantees.

Shipping costs, if any, and applicable taxes are shown at checkout before payment. Tracking details are emailed after dispatch. See the shipping policy for destination details, delays and split shipments.

Returns

Request an eligible return within 30 days of delivery. Items must meet the policy's condition requirements, including being unused/unworn with tags, accessories, parts and proof of purchase. Conditions and exclusions apply, including those for used items, gift cards and marked final-sale items.

For eligible returns, a prepaid return label is provided. Start by emailing canadawildco@gmail.com. Refunds are normally issued within 5–10 business days after the returned item is received; your payment provider may take additional time.

Read the full return and refund policy for eligibility, packaging requirements, exclusions and damaged or incorrect items.

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