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Western Mountaineering Sycamore MF Sleeping Bag: 25F Down

$495.00 - $515.00

So much room for activities.

Your backpacking buddies prefer packing as little as possible to wrap themselves up like mummies in the middle of the woods. You, on the other hand, pack Western Mountaineering's Sycamore MF Sleeping Bag in your raft and still have plenty of space for blowup palm trees, hula skirts, and island drinks. While they contemplate ways to keep their toes warm at night after a hearty dinner of lukewarm beans, you can stretch out in this semi-rectangular bag. Western Mountaineering made this shell out of Microlite XP fabric for durable water-resistance. The Sycamore features a roomy hood with secure adjustment, and the full-length zipper transforms the bag into a blanket for even more comfort.

  • Semi-rectangular sleeping bag ideal for river trips
  • 850+ fill down insulation has the highest loft-to-weight ratio
  • Microlite XP shell is durably water-resistant
  • Roomy hood with adjustments for security in windy weather
  • Full-length zipper switches bag into blanket
  • Item #WES000I

MicroLite XP
850+ fill down
Max User Height
6ft, 6ft 6in
Shoulder Circumference
Hip Circumference
Foot Circumference
Fill Weight
17oz, 19oz
Stuff Size
8 x 15in
Claimed Weight
2lb, 2lb 2oz
Recommended Use
camping, backpacking
Manufacturer Warranty

Tech Specs

What do you think about this product?


>Rating: 5

Love this bag!

I've used it several times
True to size
Size Bought
6 ft
5` 9"
170 lbs

I love this sleeping bag. I use it for backpacking due to the weight and compact size. It is down so is very compressible which is important on longer backpacking trips when space is an issue. It is accurately warm to it’s rating at 25 degrees. It has a nice draw string hood for cold nights. The loft is impressive and very comfortable. I then transitioned from a backpack trip to a camper scenario and one of the unique features of this sleeping bag is that it fully unzips even in the foot box so it can then be used as a quilt. Absolutely love it, the fine details are excellent- Velcro straps, draw-string cord and zippers. Love the quality of this brand!

>Rating: 5

Wiggle room

I like to sleep sprawled out, taking up my entire queen bed at home, so I love the Sycamore for car camping and river trips. This bag is like sleeping on a cloud and gives me room to kick and roll throughout the night. If I'm feeling generous I can even unzip the bag into a blanket big enough to share.

>Rating: 5

A definite favorite

Being the Western Rep, I have my choice of what to use. So it says alot when I tell you that I find myself reaching for the Sycamore again and again. Nice room for movement, and I can zip it together with my sweetie's bag. A total plus! You will love the Sycamore! Leta Western Mountaineering Rep


Hi there! Can anyone explain the difference between the Sycamore and the Alder bags? I am looking for a bag that will be highly functional in many types of conditions, including the occasional canoe camping or wet East Coast backpacking trip. It seems that the Sycamore is slightly more water resistant. Is that accurate? And are there other differences between the two? Thanks!

I can answer that for sure! Honestly the biggest difference between the Sycamore and Alder MF is the shape of the bag. This Sycamore has a hood built in for keeping your head warm while sleeping, while the Alder doesn't. Because of that, it also means its a little heavier and bulkier to carry (although its only like a difference of seriously an oz, and a couple inches respectively). That's basically it! The waterproofing on both of them is the same, since they both use the MF (microfiber) face fabric as the base. As far as having a hood, its really up to you, but personally would rather have it and not need it, then need it and not have it! However, you are definitely going to want to pair this with a waterproof stuff sack, because if you get this down wet it's really hard to get it dry again. My personal favorite is Sea To Summit eVent Compression Dry Sack! You could drag that sucker behind a boat, and it still wouldn't get wet. I hope that helps! Let me know if you have any other questions. My contact details are above, and I am always down to help!

Zak, thank you for beating me to the answer. Paige, Zak is right on. They are made of the same "ingredients" , but the Sycamore has a hood and the Alder does not. The hood adds an extra ounce of weight. Thank you for your question! Leta Western Mountaineering rep


For the smaller size, is 6' the length of the bag (including the hood) or is it longer and recommended for users up to 6'. If the bag is longer than 6' including the hood, what is the total length? Thank you

I don't know, but I am finding out - please stay tuned! Leta Western Mountaineering Rep

Ask, and you shall receive! This is directly from the product manager at Western Mountaineering: "We measure from where the hood starts curving at so usually there should be an inch to an inch and a quarter to an inch and a half beyond that to the top of the curve of the inside hood. This would put the inside measurement on a 6’0” Sycamore for the length from the inner foot to the top of the inside hood somewhere very close to 73. 5” with the slack pulled out. The relaxed measurement to the top of the hood on the inside would be right at 72” or slightly under at closer to 71.5” or 71.75”." Let me know if that answers the question! Thank you, Leta WM Rep