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Rewards Program Terms and Conditions
Last updated January 1st, 2020
Opting-in to Moosejaw Rewards:
All users must accept these terms and conditions and create an account with Moosejaw to opt-in to the program and earn, accrue, retain and redeem Moosejaw Reward Dollars (MJ$). The program is FREE to join and membership is ongoing until or unless the user requests to be removed or is removed due to abuse of the program. Users can opt-in to the program while checking out on Moosejaw.com or at one of our stores or at any time within 30 days of purchase to accrue the MJ$ earned on that purchase. Once opted-in to the program, MJ$ will earn and accrue for redemption as described below until the MJ$ expire or the user leaves the program.
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The program opt-in requirement was added on August 6th, 2019. Existing program members prior to that date must still formally opt-in and accept the terms and conditions to continue to retain, earn and redeem MJ$. Pre-existing program members that fail to opt-in prior to June 28, 2020 will be removed from the program, and any unused MJ$ will be voided. We really, really don't want to that to happen, so please opt-in or we'll feel terrible.
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Bonus Rewards Promotions:
Every so often, we'll have special offers where you can earn bonus MJ$, like an additional 10%, 20% or 40% back. So if we are running a 50% back special offer, and you buy a regular-priced item for $100.00, you will receive MJ$10.00 in base points, and a bonus of MJ$40. These special offers may have a cap on how many bonus MJ$ you earn during the promotion, but you will always earn the base Reward Dollars. Make sure to check us out on our social channels for other ways to win some extra MJ$!
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For Moosejaw Rewards members only. New members enroll for free during checkout.
You must use code CLIMBERS20 to take the 20% off one full-priced item.
The deal is only on in stock items. Deal cannot be applied to prior purchases or with other promotions.
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The code is only good through February 19th, 2023.
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The Western Mountaineering Bag Expander adds the extra space needed to your favorite Western Mountaineering sleeping bag. Do you have wide shoulders or sleep like a tornado? Never fear! You can now slide into your bag comfortably and roll around as you please with this handy bag expander. It makes the bag just wide enough for more comfort as you sleep.
FEATURES of the Western Mountaineering Bag Expander
Designed to coordinate with only Western Mountaineering sleeping bags
Instantly provides more space in sleeping bag
Great for creating extra room for warmer weather camping
Also allows you to squeeze into a Western Mountaineering sleeping bag with a snuggle buddy
Product Specifications
Best Use:
Mountaineering and Alpine, Ultralight Backpacking, Backpacking
Weight:
3.5 oz
Disclaimer:
We only ship this brand to US Addresses.
Gender:
Mens
Fill Details:
850+ Fill Power Goose Down
Product Reviews
Rated 5 out of
5 by
Cathy G from
Can't wait to use itAfter an uncomfortable early spring overnight trip, I've decided to get a warmer bag but don't like the closed in feeling of a mummy. I knew I wanted another WM bag and this seemed like a good way to add a little room without sizing up to a larger bulkier bag. I tried it out on my daughter's Versalite and it felt like a perfect fit. Now to order my bag and wait for it to get cold again.
Date published: 2022-06-08
Rated 5 out of
5 by
RiseAndStumble from
Great productBeing a bigger guy, this is a perfect addition to my Versalite 10 degree bag. It weighs next to nothing and gives me the little bit of extra room I need to sleep more comfortably at night. The Alpinlite was a better fit for me than. The Versalite (being 2 inches bigger around the shoulders and hips) was a better fit for me, but I wanted a 10 degree bag for an early PCT thru hike start for 2020, so this was the perfect solution!
Date published: 2019-12-26
Rated 5 out of
5 by
RonA from
Perfect slice of fitI purchased this expander just before leaving for Elk season knowing I may need a couple extra inches and boy did it come in handy, at 10 degree's I slept like a squirrel in a tree.
Date published: 2019-11-14
Rated 5 out of
5 by
Sandy1 from
Three Season Sleeping Bag ExpanderWestern Mountaineering makes the finest down sleeping bags and accessories. This is the second expander I have purchased from Moosejaw. While their products cost a bit more you get the highest quality. This is the accessory you want if you toss and turn in your sleeping bag. I highly recommend the expander for comfortable sleeping. Enjoy!
Date published: 2019-06-09
Rated 5 out of
5 by
Jman from
Made all the differenceI have an Alpinlite 6' sleeping bag and I bought it because of its larger size. After using it a few times I wished it had just a bit more room. This expander made all the difference for me. It made the bag much roomier! Awesome...
Date published: 2019-02-18
Rated 5 out of
5 by
JasonV from
Worked great with my Alpinlite!I have wide shoulders and tend to toss and turn while I sleep so I’ve always had trouble sleeping well in a mummy bag. When I first got my Alpinlite it was a revelation. Now that I’ve added the expander as well, it’s even more comfortable. Was in the Emigrant Wilderness last weekend in the low 20s with 30mph wind gusts, and I was toasty and comfortable the whole night. For those that prefer extra comfort and sleeping through the night over adding 5.6oz, I highly recommend!
Date published: 2018-05-07
Rated 5 out of
5 by
Bassmd from
Typical westernmoutaineeringThe quality does not disappoint! I’m 6’ 250lbs and it allows me to more comfortably fit into my Alder MF. All of their stuff is top of the line and this is no different!
Date published: 2018-02-02
Rated 5 out of
5 by
Richie from
Great additionAdds a great deal of room to already great WM bags. Allows the addition of down jacket to boost warmth if needed. Well made like all WM gear.
Will these work with other brands? I currently have a marmot
Asked by: Luke82
Great question! The Bag Expander is designed for use only with Western Mountaineering bags. It may or may not work with other brands. If you decide to try it out with your Marmot and it doesn't fit, just let us know and we will help facilitate a return :)
Answered by: Foxxy Cleopatra
Date published: 2022-09-25
How much girth does this add to a sleeping bag?
Asked by: SaltyOtter
Hey SaltyOtter, great question! This will add approximately 6" of girth to your bag, I hope this helps!
Answered by: Marty Moose
Date published: 2022-04-02
What size zippers are on this expander?
Asked by: Jbone
Great question! The Expander zippers are manufactured by YKK, and are of the 5CN size (for a 6mm coil-style zipper). The main zipper pull is double-sided. I hope this info helps!
Answered by: Foxxy Cleopatra
Date published: 2021-07-24
Hi! Do these fit with the Longer 6'6" sleeping bags?
Asked by: SarahMaple
Hey there, thanks for your question.
According to Western Mountaineering, their bag expander works best with their 6 foot bags. However, since most of the length is added to the footbox below the zipper, the expander will work with any bag length. There may just be a slight overlap but nothing that would drastically impact performance.
I hope this helps!
Answered by: Gator
Date published: 2022-07-02
How many inches is this expander?
Asked by: jennifer
Hey jennifer, great question! The Three Season option is 66" while the Summer is 68", both work best with the 6' Western Mountaineering bags. I hope this helps!