1. Hyke & Byke Snowmass 0 Degree Down Sleeping Bag for Backpacking, Ultralight Mummy Down Bag with Lightweight Compression Sack (Maroon, Long) (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
â–ºSAVE SPACE and SHAVE WEIGHT with ultralight premium quality duck down filling (superior to synthetic) - nature's best light insulator with the highest warmth-to-weight ratio to beat the cold outdoor winter weather. Buy now and have zero regrets.â–ºSTAY WARM as a result of duck down insulation capabilities and waterproof fabrics - the microscopic air clusters found in down feathers creates "loft" that traps heat and keeps you warm from 10 to 40 degrees.

2. Outdoor Vitals Aerie 30°F Down Underquilt / Sleeping Bag, Use As Ultralight Underquilt, Sleeping Bag, Or Double Bag (Click Link to Check Price on Amazon)
Editor's Rating : 9.7 out of 10
5 USES IN 1: utilize this bag as an UNDERQUILT, a POD SYSTEM, a TECHNICAL BLANKET, a SLEEPING BAG or buy two and make it into a DOUBLE SLEEPING BAG!CUT WEIGHT & SAVE SPACE with ultralight highest quality 800 fill power down which makes this bag weigh in at 1.7 lbs and compress to 9 x 7 inches! Down is natures (and the world's) best insulator. Nothing beats high quality down's weight-to-warmth ratios so you'll never regret buying this bag!

3. ECOOPRO Warm Weather Sleeping Bag - Outdoor Camping, Backpacking & Hiking - Fit for Kids, Teens and Adults - Spring, Summer & Fall - Lightweight, Waterproof & Compact Khaki (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
SUPER COMFORT- Each ECOOPRO sleeping bag for kids or adults is filled by premium TC cotton that blocks out temperatures over 50 degrees to give you a warm, ultra-comfortable night's rest.MULTIPURPOSE VERSATILITY- You don't need a sleeping bag liner to use our cold weather sleeping bag in the spring, summer or fall. In fact, it's the perfect teen sleep bag for camping trips, BoyScouts or mountain hiking.

4. Eagles Nest Outfitters - Spark Top Quilt, Red/Charcoal (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
STAY WARM AND HAMMOCK HAPPY - The warm and affordable counterpart to the Ember2 Under Quilt (sold separately), the Spark Top Quilt makes for the perfect cool weather hammocking solution.EASY ENTRY AND EXIT - A velcro controlled convertible footbox makes for a quick entry and exit, while the nylon taffeta lining is soft against the skin.

5. Norsens XL Ultra Lightweight Compact Sleeping Bag 0 Degree, Hiking Backpacking Camping Sleeping Bags for Adults with Compression Sack (Click Link to Check Price on Amazon)
Editor's Rating : 9.3 out of 10
IDEAL FOR EXTREME WEATHERS - Designed for near-freezing temperatures, a extreme rating of 0°C/30°F (Range: 0-15 °C/30 - 60°F), thanks to our water-resistant/weather-proof polyester cover, spinning cotton filling and straight quilted design.PACK LIGHT & SMALL : Super small (20*20cm) and lightweight (2.8 lbs), when packed into included compression sack we handle, convenient to store and easy to carry along.