- 30 × 37 cm
- 1.740 g
- 22 × 36 cm
- 5 °C
- 1.280 g
- 20 × 40 cm
- 11 °C
- 1.220 g
- 20 × 33 cm
- 4 °C
- 1.200 g
- 20 × 35 cm
- 7 °C
- 1.080 g
- 14 × 31 cm
- 12 °C
- 910 g
Why a synthetic sleeping bag?
Synthetic fill loses less warmth than down when damp, dries faster and is easy to care for. In return it is heavier and bulkier for the same warmth. Our synthetic bags are filled with NightPro Hollow Fibre, a hollow polyester fibre that traps air.
Synthetic sleeping bags compared
| Model | Fill | Comfort | Limit | Weight M / L | Compressed size |
|---|---|---|---|---|---|
| Mudds Summer | Synthetic | 12 °C | 8 °C | 810 / 910 g | 14 x 24 cm |
| Blues Summer | Synthetic (rectangular) | 11 °C | 7 °C | 1,120 / 1,280 g | 20 x 33 cm |
| Tracks Spring | Synthetic | 7 °C | 2 °C | 980 / 1,080 g | 20 x 28 cm |
| Mudds Autumn | Synthetic | 5 °C | 0 °C | 1,160 / 1,320 g | 22 x 29 cm |
| Tracks Autumn | Synthetic | 4 °C | -1 °C | 1,080 / 1,240 g | 20 x 26 cm |
| Mudds Winter | Synthetic | 0 °C | -5 °C | 1,580 / 1,860 g | 30 x 30 cm |
Comfort and limit temperatures from Wechsel product data 2026. Weight without stuff sack in size M (body height up to 175 cm) / L (up to 195 cm). Compressed size in size M (diameter x length).
Which range suits you?
Mudds: fully featured
The Mudds Summer, Mudds Autumn and Mudds Winter have MoskitoFlex insect protection, VolumeShift, Air/Zip ventilation and a draught collar. Comfort 12 °C, 5 °C and 0 °C.
Tracks: lighter
The Tracks Spring (7 °C, 980 g) and Tracks Autumn (4 °C, 1,080 g) with VolumeShift. The Tracks Autumn is 80 g lighter than the Mudds Autumn and rated 1 °C warmer.
Blues: opens out
The Blues Summer is a rectangular sleeping bag with a full-length zip. Open it right out to use as a blanket. Comfort 11 °C.
VolumeShift, MoskitoFlex and Air/Zip
VolumeShift lets you reduce the foot section so your body has less air to warm – handy when a night turns colder than planned. MoskitoFlex is a face net against insects that stows in the chest pocket. Air/Zip vents the foot area when it gets too warm. The AntiSnag slider stops fabric catching in the zip.
Synthetic or down?
At a 7 °C comfort rating, the Tracks Spring weighs 980 g and the Pyro 250 down bag 480 g. If every gram counts, choose down. If you often sleep in damp conditions, car camp or camp with children, synthetic is the easier choice. Down models are under Down sleeping bags.
Care and repair
Air your sleeping bag after every trip and store it loosely, not in the compression sack. More under Care & Cleaning. If something is damaged, our repair service can help.
Synthetic sleeping bag FAQs
How warm is a synthetic sleeping bag?
Our models range from 12 °C (Mudds Summer) to 0 °C comfort (Mudds Winter).
Is there a sleeping bag with a mosquito net?
Yes, the Mudds range has the built-in MoskitoFlex face net.
Which is the lightest synthetic sleeping bag?
The Mudds Summer at 810 g in size M, made for nights from 12 °C.
Which size do I need?
M fits up to 175 cm, L up to 195 cm. Every model comes in both sizes.