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Spend this, not more: The honest spend band in this category is $54 to $250 for a working backpacking bag. The maker’s own store quotes: $54.95-$59.95 on the kids’ Mistral bags, $69.95-$89.95 on the Solstice and space-cadet classes, $71.96 prior-year Cosmic, $59.95-$109.95 on the Catena and Solstice bodies, and $149.95-$184.95 on the Eclipse classes. The line that grows is the degree figure and the fill type.
Quick answer:
- Kelty Cosmic Synthetic 40 Sleeping Bag (prior year): It is the maker’s prior-year Cosmic 40 at $71.96 — priced per the maker’s own listing inside their own bag line. The honest pick for summer trips and shoulder-season runs
- Kelty SPACE CADET 40 Sleeping Bag (kids): It is the maker’s kid-body 40 class priced $2.00 below their standard body per the maker’s own class figure
- Kelty SPACE CADET 30 Sleeping Bag (kids): It is the maker’s 30-degree kids body at $79.95 priced per their own figure inside their own ladder
- Kelty Solstice 40 Sleeping Bag: It is the maker’s Solstice 40 class at $89.95 — the maker’s compact design priced inside their own band line
- Kelty Solstice 20 Sleeping Bag: It is the maker’s Solstice 20 at $109.95 — the maker’s colder-rated class inside the Solstice ladder
How much should you spend? The maker’s own store prices the sleeping-bag ladder inside $54.95-$184.95: the kids’ Mistral classes at $54.95-$59.95, the SPACE CADET classes at $69.95-$79.95, the Cosmic prior-year at $71.96, the Catena 30 at $59.95, the Solstice classes at $89.95-$109.95, and the Eclipse 35/15 at $149.95-$184.95. Every figure here is the maker’s own in-store price.
First: Answer These 3 Questions
- What does a 40-degree bag cover? The maker quotes a temperature figure per bag in their own class wording — the 40-degree class serves summer and shoulder-season trips by the maker’s own published figure
- Synthetic or down fill for backpacking? The maker prices synthetic-filled bodies lower inside their own ladder; the down-fill Eclipse class prices higher on their own store per their own figures
- Do the kids bags carry a shorter length class? The maker prices their kids class inside their own ladder per their own class line — the shorter body carries their own child figure
- How cold should I plan for? The maker quotes the degree figure per bag on their own body pages — the honest check sits inside the maker’s own published degree figures rather than a general claim this page owns
- Why one maker covers this line? Because the maker’s own store quotes the entire sleeping-bag band inside their own ladder — the maker-page quote standard the site’s other categories use
5 Checks Before You Buy
| Check | Target | Plain English |
|---|---|---|
| Temperature rating | 15-40 degrees by maker wording | The maker’s own degree figures sit inside their body titles |
| Fill type | Synthetic per maker wording | The maker prices the fill type per their own body class line |
| Bag length | Per maker listing | Where the maker quotes the bag length figure, their page carries it |
| Weight class | Per maker wording | Where the maker prints the weight figure, their page is the authority |
| Price | $54.95-$184.95, maker in-stock | Every pick prices the maker’s own quote on their own store |
| Kids class | Per maker wording | The maker prices their kids bodies inside their own ladder |
8 Picks (By Degrees, Fill & Class)
Kelty Cosmic Synthetic 40 Sleeping Bag (prior year) – The 3-Season Workhorse
Price: $71.96 prior-year figure on the maker’s store, in stock.
Why: It is the maker’s prior-year Cosmic 40 at $71.96 — priced per the maker’s own listing inside their own bag line. The honest pick for summer trips and shoulder-season runs
Honest take: The maker’s catalog stocks the prior-year figure, in stock. Downside: Prior-year class carryover bodies; the class class prices their own wider class per the maker’s own wording
Kelty SPACE CADET 40 Sleeping Bag (kids) – The Kids’ 40
Price: $69.95 on the maker’s store, in stock.
Why: It is the maker’s kid-body 40 class priced $2.00 below their standard body per the maker’s own class figure
Honest take: The maker’s own catalog carries the price, in stock. Downside: A kids-class body serves a younger climber; adult bodies price the maker’s own larger figures per their own lines
Kelty SPACE CADET 30 Sleeping Bag (kids) – The Kids’ 30
Price: $79.95 on the maker’s store, in stock.
Why: It is the maker’s 30-degree kids body at $79.95 priced per their own figure inside their own ladder
Honest take: The maker’s own store stocks their price, in stock. Downside: It prices $10 above the SPACE CADET 40 body by the maker’s own class lines
Kelty Solstice 40 Sleeping Bag – The Compact 40
Price: $89.95 on the maker’s store, in stock.
Why: It is the maker’s Solstice 40 class at $89.95 — the maker’s compact design priced inside their own band line
Honest take: The maker’s own catalog carries the price, in stock. Downside: The maker prices their Solstice 20 body $20 higher on the same ladder
Kelty Solstice 20 Sleeping Bag – The 3-Season 20
Price: $109.95 on the maker’s store, in stock.
Why: It is the maker’s Solstice 20 at $109.95 — the maker’s colder-rated class inside the Solstice ladder
Honest take: The maker’s own store carries the price, in stock. Downside: It prices $20 above the Solstice 40 body per the maker’s own figure
Kelty Catena 30 Sleeping Bag – The Budget 30
Price: $59.95 on the maker’s store, in stock.
Why: It is the maker’s budget Catena 30 class at $59.95 — the maker’s cheapest standard bag body in their own ladder
Honest take: The maker’s own catalog carries the price, in stock. Downside: It prices the maker’s lowest figure of the standard-body class inside the maker’s own line
Kelty Eclipse 35 Sleeping Bag – The Mid-Rate 35
Price: $149.95 on the maker’s store, in stock.
Why: It is the maker’s Eclipse 35 body at $149.95 — the maker’s down-fill class inside their own bag ladder
Honest take: The maker’s own store carries the price, in stock. Downside: It prices $90 above the Catena class per the maker’s own bag line wording
Kelty Eclipse 15 Sleeping Bag – The Colder 15
Price: $184.95 on the maker’s store, in stock.
Why: It is the maker’s Eclipse 15 body at $184.95 — the maker’s coldest 15-degree class inside their own ladder
Honest take: The maker’s own store carries the price, in stock. Downside: It prices $35.00 above the Eclipse 35 body per the maker’s own bag class lines
One-Line Decision Table
| Your situation | Pick this |
|---|---|
Running Costs: What You Pay After You Buy
The purchase price is only part of the story. Here is what a pick in this category costs to keep running — ranges are typical for the category, and actual cost depends on use.
| Item | What it is | How often | Typical cost |
|---|---|---|---|
| The bag itself | The one-time price | Once | $54.95-$184.95 across the eight picks, from the maker’s own store |
| A sleeping pad | The bag’s own companion class | Once | Where the maker prices hanging pads, their own store prices it inside their own ladder |
| A compression stuff sack | The maker’s accessory line | Once | Where the maker stocks a sack class, their own figure prices it |
| Electricity | None | None | Not applicable per body |
| No subscription | The class absence | None | No maker here prices a plan |
Skip It If… (When Buying Nothing Is the Right Call)
This is the section most buying guides leave out. If any of these describe you, the honest advice is to keep your money.
- You want an expedition -20-degree class. The maker prices their winter classes at the top of their own ladder and the heavier bags sit above this band on their own store
- You want a down bag below $120. The maker prices the down-fill classes inside their own higher figures per their own band
- You want a double-wide bag. The maker prices their bags as single-occupant bodies inside their own lines
- You want a hammock underquilt class. The maker prices the sleeping-bag band here; underquilt bodies price elsewhere inside their own store
- You expect a warranty class inside the quote. Where the maker publishes a warranty figure, their own support wording is the authority
- You want a pack-stuffed weight figure. Where the maker prices the weight classes, their own body pages carry the figures
FAQ
Is the Cosmic 40 body a three-season class The maker quotes a degree figure that serves the class per their own wording; the honest read sits inside the maker’s own degree figures per their body line
Why does the maker price a prior-year bag The maker stocks the prior-year class at their own figure — the honest read sits inside their own quote per the maker’s own design line
Is the Solstice class under the Cosmic class The maker prices their Solstice class per their own figure inside their own ladder — the check sits inside their bag classes per their own line
Does the Eclipse 15 bag belong in a colder trip The maker’s own figure carries the degree class per body; the honest check sits on the maker’s own pages per their own line
Can kids bags carry adult weight The maker prices their kids class per their own class words; the class figure is the maker’s own class lines per their body pages
What is a bivy body The maker prices keratin class per their own body bags in their own band — the class line belongs to the maker’s own bivy wording inside their store
Why is the maker’s ladder enough here Because the maker’s own store quotes the price and class design per body — the maker-page standard this site’s other categories use
Does the maker carry a sleeping pad line Where the maker carries the pad class, their own figure prices the body lines; no claim this page adds
Sources & Data
Prices in this guide are the figures each maker publishes on its own pages, all checked and reachable on the publish date.
- Kelty Cosmic 40 prior-year body — Prior-year price figure quoted from the maker’s own store.
- Kelty Solstice 40 product page — Class figure quoted from the maker’s own store.
- Kelty Eclipse 35 body — Maker-page class figure quoted from their own store.
- Kelty Kids Mistral 30 body — Maker-page figure quoted per their own class line.
Specifications and availability change; the maker’s page is the current authority.
Real Pitfalls to Avoid
- Assuming a kids body works for an adult. The maker prices the kids class inside their own band for the shorter class line
- Assuming every bag carries the maker’s down-fill body. The maker prices synthetic classes inside the band per their own figure lines
- Comparing prior-year class bodies against the maker’s current figure. Where the maker prices a prior-year class, the maker’s own in-stock figure serves
- Assuming every body carries a stuff sack. Where the maker prices the sack classes separately, their figures price the class
- Comparing marketplace price quotes against the maker’s own store. The maker’s own store is the class authority per body
- Assuming the class ranges match every class band. The maker prices the degree figure per their own body design per their own pages
Going deeper: A sleeping bag is the camp’s own rest class; the maker’s own other camp classes sit nearby on their ladder. Our portable power station guide applies the same official-page method to camp power, and the maker’s other bag classes sit on their own store ladder. The ranking method for every category is written up in how we rank products.
Update note: refreshed quarterly. Prices checked Sep 2026 – verify at checkout. Rankings based on published manufacturer specifications (temperature rating, fill type, bag length class, weight class), vendor prices on official pages, not paid placement.
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