Nemo Sonic Down Sleeping Bag: Comfort and Style All in One!

Two adults in Nemo Sonic Down Sleeping Bags camping in the winterNemo is an outdoor equipment company that makes sleeping bags and more products. It is known for its unique style, using the best materials for the sleeping bags and other gear. Since 2002, Nemo has shown us great products with bold colors and designs that make you stand out among the rest of the campers. You’ll understand why Nemo is so great after we review the Nemo Sonic Down Sleeping Bag and show you all the quality and style you will get.

The Nemo Sonic sleeping bag can keep you warm on nights that fall down to 15 degrees Fahrenheit, or 11 degrees Celsius. It is made with the serious winter camper in mind, with quality materials that are sure to last you a very long time. The thermo gills will regulate your warmth and the Toester Box will reduce cold spots. The sleeping bag has a centerpper that allows you easy access when getting out of it.

This sleeping bag was Backpacker Magazine’s 2015 Editors’ Choice and received an award. You will love the 850 fill down that provides comfort and blocks heat loss, as well as the waterproof nylon shell that also includes Durable Water Repellent. Many have enjoyed how thermally efficient this sleeping bag is and the fact that is has an internal draft collar that keeps the cold air out. Continue on below for all the great features this award winning sleeping bag has to offer!



Nemo Sonic Down comes complete with all the components you would need for your outdoor adventures. It doesn’t require any additional purchases to use it. It’s in fact a ready to use a sleeping bag with a feature-rich shell to let you sleep even on rougher surfaces. The stuff sack is included in which you can store the product to reach your destination. If you want to enhance its warmth in snowy areas, you can consider purchasing the sleeping pad or mad separately.

Design & Durability

The Nemo Sonic is designed with the extreme weather loving camper in mind. It is made with a central zipper that appears along the front of the sleeping bag, for easier access getting in and out. It is also waterproof and is coated with a Durable Water Repellent that allows any water to slide right off, keeping the sleeping bag dry, as well as you.

Do you sleep on your side? Many people do, and Nemo thought of that, and what they could do to make side sleepers more comfortable in a sleeping bag. They added a stretchy material in the knee area of the sleeping bag to allow you to sleep as comfortably as you would at home. The over-sized draft collar keeps cold air out, and the thermo gills keep the sleeping bag temperature regulated.

Nemo Sonic Down Sleeping Bag on the ground

Nemo is known for its unique shapes and colors for their sleeping bags. This bag in particular comes in a Granite and Sunburst Yellow color that is stylish and stands out among other sleeping bags. Many campers love that Nemo and their products stand out above the rest.

Since Nemo is known for being bold with their styles and colors, it is no wonder that they would use quality materials in their products to provide you with the best sleeping experience while outdoors. This sleeping bag includes a nylon shell that will not only repel water, but is waterproof as well.

Nemo sleeping bag near a Jeep car

Inside, the insulation is made with 850 power filled down comforting that is not too bulky, but traps in the heat so you stay warm without feeling weighed down. Remember, Nemo has all of your camping needs, including sleeping bags for all weather and levels of comfort.


This sleeping bag sleeps only one, so it will be light in weight. The regular version of this bag weighs 2 pounds, 6 ounces and the long version weights 2 pounds, 9 ounces. As you can tell, they are not very heavy and should fit well with the rest of your gear, as extra weight tires you out faster when you are out hiking or mountaineering. Some people use it for camping only, so once they set up their tent, they leave their sleeping bags inside and enjoy the outdoors without all the gear attached to them.

Testing the Nemo Sonic Down Sleeping Bag

The reason this sleeping is so lightweight is because it is made with great materials that keep the weight down, but still keep you warm and dry. When you are camping during the winter, you will want to stay as warm as you can with your sleeping bag, and this one promises to keep you comfortable down to 15 degrees Fahrenheit.


As mentioned, the filling is 850 fill power down, which is the best insulation material you can get when it comes to warmth in a sleeping bag. It also provides more warmth than other materials, and it lasts a long time.

The shell and lining fabric are made with 20 D Nylon Rip Stop with Durable Water Repellent, which means that you are going to stay dry and you will not have to worry about the fabric ripping or tearing. Also, the foot box material is made of 40 D Nylon Rip Stop with OSMO.

Weather Resistance

This sleeping bag is made for colder weather such as winter time, early spring and late fall. The temperature rating for the Nemo Sonic is 15 degrees, or -9 degrees Celsius, so you will stay warm down to that temperature.

Two adults sitting in sleeping bags looking at the moutains

Often, most areas do not experience such cold weather, but it does happen in certain states and certainly if you are camping in the mountains. It will be important to stay warm in order to stay alive. You can freeze and get frost bite if you are not properly prepared for the winter weather.

You are protected from getting wet with not only the waterproof feature, but also the water repellent feature called Durable Water Repellent. You will stay dry all night without an issue, plus the sleeping bag is designed to keep warm air in and cold air out, guaranteeing a comfortable night of sleep. Do not forget, you can purchase a Nemo Fillow Pillow in several colors, to keep your head propped up as you sleep!

Woman looking down to Nemo sleeping bag sitting near two bikes and a tent

The great thing about this sleeping bag is that it is waterproof and has a coat of Durable Water Repellent so that you have no worries about if your sleeping bag is dry. It is. And so will you be. The mummy shape keeps you warmer in lieu of a regular style sleeping bag. The hood forms to your face, to block out wind and cold air. The draft collar can be used to keep cold air out or you can open it up to allow some air inside. This sleeping bag definitely gives you options.


Below is a chart of the specifications of the Nemo Sonic sleeping bag. It comes in two sizes, Regular and Long, and the specifications for both are listed. Nemo hopes that you will find their sleeping bags of great quality and comfort, and that maybe this is the next sleeping bag for your next camping trip!

Sonic Sleeping Bag Specs Nemo Sonic Regular Bag Nemo Sonic Long Bag
Temperature Rating 15 degrees F 15 degrees F
Fill Type 850 Power Filled Down 850 Power Filled Down
Fill Weight 1 lb, 1.3 oz 1 lb, 2.8 oz
Product Minimum Weight 2 lb, 6 oz 2 lb, 6 oz
Shape Mummy Mummy
Capacity 1 person 1 person
Maximum User Height 6.5 ft tall 6 ft tall
Shoulder Girth 61 in 69 in
Hip Girth 58 in 63 in
Gender Unisex Unisex
Pack Size 18 x 9 in 18 x 9 in
Color Granite/ Starburst Yellow Granite/ Starburst Yellow
Shell Fabric 20 Denier Rip Stop Nylon 20 Denier Rip Stop Nylon
Compressed Volume 6.5 L 7.5 L

Unique Features

Nemo ensures that your winter camping trip will be more comfortable when you have one of their sleeping bags, and other products like tents. The technology used is no doubt in keeping you warm and keeping the winter air out, so that you can sleep like a baby and wake rested for fun winter adventures the next day.

Man in a tent holding a sleeping bag and a pair of pants

Below are two charts as to how the Nemo Sonic stacks up to other sleeping bags that are made by Nemo. No doubt, this great company will have something that will suit your needs. See how this sleeping bag compares with other with their unique features.

Sleeping Bag Comparison Nemo Mezzo Duo Loft Nemo Symphony Luxury Duo Nemo Sonic Regular Single Bag
Temperature Rating in Fahrenheit 30 degrees 25 degrees 15 degrees
Fill Type Stratofiber micro fiber Stratofiber micro fiber 850 Power Fill Down
Fill Weight 2 pounds, 12 oz 7 pounds, 6 oz 2 pounds, 6 oz
Minimum Weight 5 pounds 9 pounds, 15 oz 2 pounds, 9 oz
Shape Rectangular Rectangular Mummy
Max User Height 6 ft, 4 in 6 ft, 8 in 6 ft, 0 in
Shoulder Girth 146 in 146 in 61 in
Pack Size 30 x 17 in 31 x 18 in 18 x 9 in
Compressed Volume 18 L 29 L 6.5 L
Shell Fabric 40 D Nylon Rip Stop w/ DWR 40 D Nylon Rip Stop w/ DWR 20 D Nylon Rip Stop w/ DWR
Lining Fabric 30 D Nylon Taffeta w/ DWR 30 D Nylon Rip Stop w/ DWR 20 D Rip Stop Nylon w/ DWR
Color Aluminum Aluminum / Lightning Granite/ Starburst Yellow
Sleeping Bag Comparison Nemo Tango Duo Slim w/ Slip Cover Nemo Tango Duo Slim Down Comforter Nemo Rave 15 Reg Down Single Bag
Temperature Rating in Fahrenheit 30 degrees 30 degrees 15 degrees
Fill Type 700 Fill Power Down w/ Downtek 700 Fill Power Down w/ Downtek 650 Power Fill Down w/ Nikwax
Fill Weight 1 pound, 4 oz 1 pound, 4 oz 1 pound, 14 oz
Minimum Weight 2 pounds, 9 oz 2 pounds, 9 oz 3 pounds, 2 oz
Shape Rectangular Rectangular Spoon
Max User Height 6 ft, 0 in 6 ft, 0 in 5 ft, 6 in
Shoulder Girth 72 in 72 in 62 in
Pack Size 18 x10 in 18 x10 in 18.9 x 9 in
Compressed Volume 7 L 7 L 8.8 L
Shell Fabric 20 D Nylon Rip Stop w/ DWR 20 D Nylon Rip Stop w/ DWR 30 D Nylon Rip Stop w/ DWR
Lining Fabric 30 D Nylon Taffeta w/ DWR 30 D Nylon Taffeta w/ DWR 30 D Nylon Taffeta w/ DWR
Color Aluminum / Marigold Granite / Marigold Jade / Hot Pink

Value for money & guarantee

This sleeping bag has the best value for money and guarantee. You must be prepared to invest a lot of money ranging from $429.90 – $559.95 to secure its purchase. The exciting part is that no mandatory purchase whatsoever to purchase other accessories. It’s only your option to purchase other extras such as the sleeping pad or sleeping mad, because the bag itself is feature-rich and versatile to be used without those.

Two adults in Nemo sleeping bags next to a dog sitting in a tent

Nemo offers guarantee for all its products. So this bag is not an exception. In case you experience some damages after purchasing it, you can always contact their customer service and they will be glad to assist you.

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