Comfort is not limit
Read the published comfort and limit values separately. Do not treat an extreme or survival rating as a comfortable sleeping temperature.
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Understand sleeping bag temperature ratings Complete your sleep system All sleeping bags
Thermarest / Sleeping bags
Boost 650™ 20F/-6C Sleeping Bag
Sleeping bags
Choose a sleep system for the overnight conditions, not just the lowest temperature printed in a product name.
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Photo & video sources
Source product imagery; colour and included accessories may differ by configuration. Image source
NZ price unconfirmed
International specification reference; no confirmed NZD price
Therm-a-Rest international · Stock not confirmed
Recorded 8 Oct 2026 · International specification source; NZ supply unconfirmed
Not live pricing or stock. Check the exact model, size, delivery and offer conditions before purchasing.
NZ retailers & configurations
The selected source is international. NZ supply and NZD pricing must be confirmed separately.
Therm-a-Rest international · Stock not confirmed · Recorded 8 Oct 2026. Check current price, delivery and terms at source
All configurations & offers (6)
| Configuration | Source | NZD price | Recorded status | Checked |
|---|---|---|---|---|
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 | |
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 | |
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 | |
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 | |
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 | |
| Therm-a-Rest international | NZ price unconfirmed International specification reference; no confirmed NZD price | Stock not confirmed | 8 Oct 2026 |
Sleeping bags buying advice
Before you buy
Fit affects the night
Check body-length guidance, shoulder room, hood and zip side. Compare the same size when checking weight or price.
Include your mat
Your mat, shelter, clothing, moisture and individual cold sensitivity all influence the sleep system. A bag rating is not a weather guarantee.
From first use to the next trip
Use, care & repair
01Try the complete system
Test the bag with your usual mat and clothing before a remote trip. Check the zip, hood and available space without compressing insulation.
02Keep insulation dry
Protect it from rain and air it when conditions allow. Follow the care label for washing and drying; down and synthetic products can have different instructions.
03Store without compression
Once completely dry, follow the manufacturer's storage guidance. Keep the transport sack separate from long-term storage where a larger storage bag is specified.
Understand sleeping bag temperature ratings
Read the guideCommon buying questions
Good to know
Which temperature rating should I compare?
Start with the published comfort rating on a consistent test basis. Check whether the number in the product title is instead a limit rating and whether the size or version changes the specification.
Does a higher fill power automatically mean a warmer bag?
No. Fill quantity, construction, fit and the published temperature test also matter. Fill power alone is not a complete warmth comparison.
Can I use the same washing instructions for every sleeping bag?
No. Use the care label and the exact manufacturer's instructions. They take precedence over general washing advice.
Keep your options open
Compare related equipment
Other catalogue models in the same equipment category, not verified equivalents or a ranked recommendation. Prices and availability are recorded snapshots.
Outdoor Next's buying guidance is editorial research, not a hands-on test or owner rating. Manufacturer resources and external reviews retain their own authorship and terms.
Full specifications & source notes
Short · Therm-a-Rest international · Recorded 8 Oct 2026
- Comfort temperature
- Not recorded
- Limit temperature
- Not recorded
- Insulation
- Not recorded
- Weight (source basis)
- Not recorded
- Packed dimensions
- Not recorded
- Materials
- Not recorded
- Shape
- Not recorded
- Dimensions
- Not recorded
Record priority-thermarest-variant-41335105355910 · SKU 14201
Additional source notes
Public source catalogue reviewed on 8 October 2026. Model-table specifications may require size confirmation. Shipping-weight metadata is excluded. Image source does not imply an open licence.