Highlights
BEST USE: Camping, Overlanding, Van Life
PERFORMANCE: 2 Season
WEIGHT: 2lb 7.5oz | 1119g
COMPRESSED VOLUME: 8.2L
LOWER TEMP RATING: 30°F | -1°C
Performance
- Ultralight
- Lightweight
- Midweight
- Ultra Compact
- Compact
- Midsize
- Warm
- Cold
- Extreme Cold
About The Product
If you've ever wished for a less-constrictive sleeping bag that keeps you comfortable in a variety of cool-to-warm conditions, the Trek may become your go-to bag. The Free-Flow Zip system allows you to open the bag sequentially for ventilation up to the point where it is opened flat as a quilt - you can even secure the snaps around your shoulders, open the footbox zipper and 'wear' the Trek around camp. 650+ fillpower duck down with a non-PFC Ultra-Dry Down treatment keep you insulated in damper conditions. Slip an Aeros Pillow into the hood and enjoy a great night's sleep - wherever your travels take you.
Product Features
- RDS-certified, 650+ fillpower duck down with a non-PFC Ultra-Dry Down treatment to stay drier in damp conditions
- Includes a recycled 20D polyester shell with a non-PFC DWR finish blocks wind and moisture, while the polyester liner provides pure comfort.
- Free-Flow Zip System offers great temperature regulation and multiple sleeping bag configurations
- Semi-rectangular fit is designed for spacious comfort when you're camping or traveling
Shipping & Returns
We use climate-neutral shipping:
DHL GoGreen for orders to Germany, Austria and Czech Republic and
GLS Klima Protect for orders to Belgium, Denmark, France, Italy, the Netherlands, Luxembourg, Sweden, Switzerand and Norway.
All orders received by 12:00 noon on weekdays are usually shipped the same day. Orders received later are usually dispatched the following working day.
Delivery time can take up to 3 working days Germany-wide, 4 working days for orders to AT, BE, CZ, DK, FR, IT, LU, NL & SE and 6 working days for orders to CH & NO and depends on the shipping service provider.
Shipping cost:
- Germany, Austria & France: For orders with a value below 75€ we charge a shipping fee of 4,95€. We do not charge shipping fees for orders with a value over 75€.
- Belgium, Netherlands & Luxembourg: We charge a shipping fee of 9,99€ for all orders.
- Czech Republic & Italy: We charge a shipping fee of 14,99€ for all orders.
- Denmark: We charge a shipping fee of 75 DKK for all orders.
- Norway: We charge a shipping fee of 455 NOK for all orders.
- Sweden: We charge a shipping fee of 219 SEK for all orders.
- Switzerland: We charge a shipping fee of 29 CHF for all orders.
All orders can be returned within 14 days of purchase. However, for the sake of the environment, please make sure to keep returns as low as possible.
Sea to Summit tests its sleeping bags for their temperature rating using the ISO 23537 test protocol. This test gives two key ratings: Lower Limit and Comfort Rating.
Lower Limit: The lowest temperature at which a man should stay warm.
Comfort Rating: The lowest temperature at which a woman should stay warm.
Sea to Summit Women’s-specific sleeping bags are listed using the Comfort Rating. Unisex bags are listed using the Lower Rating. For example, if the bag is rated at Lower Limit of 14°F | -10°C and Comfort rating of 27°F | -3°C, it should keep a woman warm down to 27°F | -3°C and a man warm down to 14°F | -10°C, if they are wearing warm clothes and using a good sleeping pad.
Remember: These ratings are just guidelines. Movement, weather, and your gear setup can all affect how warm you actually stay.
Pro Tip: Think of your sleeping bag, pad, and liner as a system. If you expect 28°F | -2°C weather, choose a sleeping bag rated for 23°F | -5°C, use a sleeping pad with an R-Value of 3 or more, and add a liner for extra warmth.

Trek Down Sleeping Bag -1°C / Regular

- RDS-certified, 650+ fillpower duck down with a non-PFC Ultra-Dry Down treatment to stay drier in damp conditions
- Includes a recycled 20D polyester shell with a non-PFC DWR finish blocks wind and moisture, while the polyester liner provides pure comfort.
- Free-Flow Zip System offers great temperature regulation and multiple sleeping bag configurations
- Semi-rectangular fit is designed for spacious comfort when you're camping or traveling
Technical Features

650+ Loft Ultra-dry Down

Free Flow Zip

Responsible Down Standard (RDS)

Non-PFAS
Tech specs
-
Best UseCamping, Overlanding, Van Life
-
Comes With40D recycled, bluesign APPROVED nylon compression bag
-
InsulationRDS certified, 650+ non-PFAS Ultra-Dry Down
-
ShapeTapered rectangular
-
Zip OptionsFree Flow zip system
-1°C Regular | -1°C Long | -9°C Regular | -9°C Long | -18°C Regular | -18°C Long | |
---|---|---|---|---|---|---|
Bag Weight | 2lbs 7.5oz 1119g | 2lbs 12.2oz 1253g | 3lbs 2.7oz 1436g | 3lbs 8.8oz 1611g | 4lbs 2.8oz 1895g | 4lbs 10oz 2098g |
Compressed Volume | 8.2 L8.2 L | 8.8 L8.8 L | 10.6 L10.6 L | 12.2 L12.2 L | 14.2 L14.2 L | 15.9 L15.9 L |
Compression Sack | 13 L13 L | 13 L13 L | 20 L20 L | 20 L20 L | 26 L26 L | 26 L26 L |
Fill Weight | 13.4 oz 380 g | 15.4 oz 437 g | 22.4 oz 635 g | 25.9 oz 735 g | 35.3 oz 1000 g | 41 oz 1163 g |
Fits Up To Height | 6 ft 1 in 185 cm | 6 ft 6 in 198 cm | 6 ft 1 in 185 cm | 6 ft 6 in 198 cm | 6 ft 1 in 185 cm | 6 ft 6 in 198 cm |
Temperature Rating (ISO Lower Limit) | 30°F -1°C | 30°F -1°C | 15°F -9°C | 15°F -9°C | 0°F -18°C | 0°F -18°C |
Women's Temp Rating (ISO Comfort) | 37°F 3°C | 37°F 3°C | 27°F -3°C | 27°F -3°C | 12°F -11°C | 12°F -11°C |