Warm and durable, the Slumberjack Latitude 40 Degree Synthetic Sleeping Bag is a mummy-style bag ideal for spring, summer, and early fall weather. Lightweight at a little over 3 pounds, the regular-size version of the sleeping bag accommodates people up to 6 feet in height (shoulder girth is 64 inches).  The bag also features Slumberloft™ synthetic insulation, polyester taffeta lining, and a polyester diamond ripstop shell.


Let’s take a closer look at this synthetic sleeping bag:

Temperature Rating

The Slumberjack Latitude 40 Degree Synthetic Sleeping Bag features a temperature rating of 40 degrees Fahrenheit. Although it’s rated as a warm weather sleeping bag, it still works well in 30-degree temperatures. When you first jump in, you might feel a bit chilly in colder temperatures, however once your body warms this puppy up, you’ll be just fine. Just don’t take it to bag Mt. Everest.

Warm and Comfortable

A high-quality sleeping bag has to be warm and comfortable, right? This one is the perfect cozy balance of comfy and toasty—there’s even a reversible, adjustable hood for extra comfort and warmth.

Ok, it does feature a zipper, which is usually a no-no for the anti-drafters, but this Slumberjack bag keeps the drafties out nicely anyways, with a draft tube that prevents heat loss and otherwise keeps cold weather out.  The zipper is a high-quality design to keep it functioning for the life of the bag, with a coveted anti-snag feature sewn along the zipper as well as the draft tube.

(I noticed zipper complaints in other customer reviews, but so far the zipper works smoothly for me each time I’ve taken it for a spin.)

Velcro Flap Issue

One of the few negatives about this mummy sleeping bag is the semi-rigid Velcro flap found at the top of the zipper. The flap is meant to keep the bag tightly closed when fully zipped for additional warmth and comfort, which is fine and dandy. However, if keeping the bag partially open at the top, the seam at the flap edge proves rough and irritating, even against clothing. Cutting the irritating portion of the flap off the bag is the best way around this issue.

Mummy Shape: Either You Love It Or You Don’t

This and other mummy bags present issues for those who don’t like to feel confined as they sleep. Mummy-shaped bags are generally detested by side sleepers for this reason, as well as by tummy-snoozers.  Whether you use the hood or you don’t, a good night’s rest in your bag often comes down to shape preference. There’s a little bit of middle ground here, as the bag’s trapezoidal foot-box feature allows the feet to remain in a natural position, so you’re not feeling like you’re back in grade-school with your shoelaces tied together by the class bully.

Recommendation: The “Non-Extreme Camper”

For the camper who likes to toss stuff in the pickup, head out, and enjoy the summery outdoors, the Slumberjack Latitude 40 Degree Synthetic bag is great, especially for the price.  If camping in 30-degree and lower weather, or long backpacking trips are your thing, there are warmer and lighter options out there. Overall, feel confident snagging this bag for casual,  infrequent use. It holds up, provides a warm and comfortable night of rest, and keeps those pesky drafts at bay.

Shop Now
3.7 Overall
0 Users (0 votes)

This is a great summer sleeping bags. It is comfortable, room and definitely an affordable option.


If you are a "cold" sleeping, you may want to bring an additional blanket on those colder nights. The zipper is a bit problematic but keep working with it and you'll get it working


If you are considering the Slumberjack Latitude 40 Degree Synthetic sleeping bag, remember that this is a summer bag, or maybe a two season bag for warmer climates. The bag hoodie is perfect for tucking into and keeping my head warm. This bag is a great option for car camping but I wouldn't recommend it for backpacking trips due to the temperature rating. Overall, this is a great bag for the price.

Regular Weight: 3 lbs 2 oz
Long Weight: 3 lbs 6 oz
Temperature Rating: 40 Degrees Fahrenheit
Regular Size: Fits to 6 ft
Long Size: Fits to 6 ft 6 in
Fill 100% Polyester Liner Fabric: 100% Polyester Insulation Type: 100% Polyester Fiber
Temperature Rating
What people say... Login to rate
Sort by:

Be the first to leave a review.

User Avatar
{{{ review.rating_title }}}
{{{review.rating_comment | nl2br}}}

Show more
{{ pageNumber+1 }}