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TETON Sports Celsius vs REI Co-op Siesta Hooded 20 Sleeping Bag

Editorial Team
Last modified at August 9, 2026
Choosing between the TETON Sports Celsius and REI Co-op Siesta Hooded 20 sleeping bags comes down to prioritizing warmth and coziness versus adaptability and user-friendliness. The Celsius is a standout for cold-weather comfort, making it ideal for car camping or cabin stays, while the Siesta Hooded 20 shines in versatility, doubling as a blanket or underquilt for more flexible use in milder climates.

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TETON Sports CelsiusREI Co-op Siesta Hooded 20 Sleeping Bag
Celsius
REI Co-op Siesta Hooded 20 Sleeping Bag
Fill Type

SuperLoft Elite hollow fiber

98% recycled polyester/2% polyester

Weight

Junior: 45.6 oz; Large: 68.8–78.4 oz; XXL: 88–152 oz

Medium: 87.3 oz; Medium Wide: 95.6 oz; Long: 94.9 oz; Long Wide: 103.5 oz

Size

Junior: 66 × 26 in; Large: 80 × 33 in; XXL: 90 × 39 in

Medium: 71 in; Long: 77 in

Shell Material

70D/190T polyester taffeta

100% recycled polyester

Compression Sack

Included

Included

Warranty

Limited lifetime

Not specified

Lining Material

75D polyester flannel

Polyester

Baffle Construction

Offset-stitch double layer

Not specified

Color

Variant-specific

Not specified

Draft Tubes

Full-length shoulder and zipper draft tubes

Draft collar and zipper draft tube

Fill Power

Not applicable - synthetic fill

Not applicable - synthetic fill

Foot Box

Rectangular

Rectangular; bottom vent

Comfort

Celsius

4.2/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

3.9/ 5.0

Comfort is critical for a restful night outdoors, especially in colder conditions where warmth and coziness directly impact sleep quality. The TETON Sports Celsius earns high praise for its soft, fluffy interior and spacious design, with buyers consistently highlighting its ability to keep users warm and comfortable even in subzero temperatures. While some report minor zipper issues, the overwhelming feedback emphasizes its plush feel and size. The REI Co-op Siesta Hooded 20, on the other hand, is noted for its blanket-like qualities and ability to function as an underquilt, offering a different kind of comfort that appeals to those who prefer flexibility. However, its comfort feedback is limited in volume compared to the Celsius. For buyers prioritizing a cozy, warm sleep experience, the Celsius is the clear winner.

Durability

Celsius

3.1/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

3.0/ 5.0

Durability ensures a sleeping bag lasts through multiple seasons and trips, resisting wear and tear from regular use. For the TETON Sports Celsius, buyer feedback doesn’t provide enough detail to confirm its long-term resilience, leaving its durability as a neutral factor. The REI Co-op Siesta Hooded 20 receives mixed reviews, with some buyers noting concerns about the strength of its sacks, while others appreciate its durable water repellent features. Neither product stands out as significantly more durable than the other, and the limited feedback for both makes it difficult to declare a winner. As a result, durability is a tie, and buyers should not rely on this category as a deciding factor.

Warmth

Celsius

4.6/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

2.8/ 5.0

Warmth is the most critical factor for cold-weather sleeping bags, as it determines whether the bag can maintain a comfortable temperature in low conditions. The TETON Sports Celsius excels here, with buyers overwhelmingly praising its ability to keep users warm even in subzero temperatures. Its high warmth rating is backed by extensive positive feedback, with only minor complaints about its performance. In contrast, the REI Co-op Siesta Hooded 20 struggles in this category, with buyers frequently noting it produces little heat and falls short of its temperature ratings. For those camping in cold climates, the Celsius is the undisputed winner for warmth.

Packability

Celsius

2.6/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

2.8/ 5.0

Packability is essential for backpackers and travelers who need to save space in their packs. The TETON Sports Celsius faces criticism for its bulkiness and zipper-related issues, which make it less ideal for backpacking trips. While some users find it manageable, the recurring complaints about its size and zipper functionality hold it back. The REI Co-op Siesta Hooded 20 also receives feedback about being bulky and not as compact as desired, though some buyers note it rolls up tighter than expected. Neither bag is a standout for packability, but the Siesta Hooded 20 edges out slightly due to its marginally better feedback in this area.

Ease Of Use

Celsius

3.1/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

3.6/ 5.0

Ease of use can make or break the camping experience, especially for those who want a hassle-free setup. The TETON Sports Celsius lacks substantial buyer feedback on this front, leaving its ease of use as a neutral factor. The REI Co-op Siesta Hooded 20, however, receives positive remarks for being easy to fold and handle, with buyers specifically noting that it presents no challenges during use. While the feedback is limited, it is consistently positive, making the Siesta Hooded 20 the better choice for those who value simplicity and convenience.

Versatility

Celsius

3.1/ 5.0

REI Co-op Siesta Hooded 20 Sleeping Bag

3.7/ 5.0

Versatility allows a sleeping bag to adapt to different conditions and uses, such as doubling as a blanket or underquilt. The TETON Sports Celsius does not have enough buyer feedback to confirm its versatility, leaving it as a neutral factor. The REI Co-op Siesta Hooded 20, however, is praised for its ability to function as a blanket or underquilt, offering more flexibility for users who want a multi-purpose option. This adaptability makes it a stronger choice for those who prioritize versatility in their gear.

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Conclusion & Final Verdict:

The TETON Sports Celsius is the best choice for cold-weather campers who prioritize warmth, comfort, and a cozy interior. Its superior warmth rating, soft flannel lining, and full-length draft tubes make it ideal for subzero conditions, car camping, or cabin stays. However, its bulkiness and occasional zipper issues may deter backpackers.

The REI Co-op Siesta Hooded 20 shines in versatility, ease of use, and eco-friendly materials, making it a great option for milder climates or those who want a multi-purpose sleeping bag. Its ability to double as a blanket or underquilt, along with its lighter weight and recycled shell material, appeals to adaptable and environmentally conscious users. However, its warmth performance lags behind the Celsius, making it less suitable for cold-weather adventures.

Final Verdict: Choose the Celsius for warmth and comfort in cold conditions, or the Siesta Hooded 20 for versatility and ease of use in milder weather.

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