A down sleeping bag designed for extreme winter conditions, Mammut's Siku Down -18°C offers high thermal insulation while maintaining an excellent warmth-to-weight ratio. Its ergonomic mummy shape limits heat loss and ensures optimal comfort, while its technical materials and advanced features allow you to sleep warm even in very cold weather.
Features
- Comfort temperature: approx. -10 °C
- Limit temperature: -18 °C
- Extreme temperature: approx. -40 °C
- Type: mummy bag
- Insulation: 90/10 down, 700 cuin RDS certified
- Weight: approx. 1700 g
- Down weight: approx. 950 g
- User length: up to 195 cm
- Compressed dimensions: approx. 29 cm
- Closure: two-way central zip
- Treatment: PFC-free water repellent
Materials
- Outer: polyamide
- Insulation: natural down 700 cuin (90/10)
- Lining: recycled polyester
Highlights
✓ Excellent insulation for winter conditions
✓ Lightweight and highly compressible down
✓ Practical central zip for ventilation
✓ Ergonomic cut limiting heat loss
✓ Reinforced head and foot areas against humidity
✓ Integrated thermal collar for added comfort
✓ Good weather resistance thanks to water-repellent treatment
Siku Down -18C Sleeping Bag - Unisex
Tops - Men
| Size | Chest (cm) | Waist (cm) | Sleeve Length (cm) |
|---|---|---|---|
| S | 88 - 91 | 74 - 77 | |
| M | 92 - 99 | 78 - 85 | |
| L | 100 - 107 | 86 - 93 | |
| XL | 108 - 115 | 94 - 102 | |
| XXL | 116 - 123 | 103 - 112 | |
| XXXL | 122 - 131 | 113 - 121 |
Tops - Women
| Size | Chest (cm) | Waist (cm) | Hips (cm) |
|---|---|---|---|
| XXS | 76 - 80 | 61 - 65 | 84 - 88 |
| XS | 81 - 85 | 66 - 70 | 89 - 93 |
| S | 86 - 91 | 71 - 75 | 94 - 99 |
| M | 92 - 97 | 76 - 81 | 100 - 105 |
| L | 98 - 106 | 82 - 90 | 106 - 114 |
| XL | 107 - 114 | 91 - 99 | 115 - 122 |
| XXL | 115 - 122 | 100 - 108 | 123 - 130 |
Bottoms - Men
| Size | Waist (cm) | Hips (cm) | Inseam – Regular (cm) |
|---|---|---|---|
| 28 | 74-77 | 87-90 | 81 |
| 30 | 78-81 | 91-94 | 81.5 |
| 32 | 82-85 | 95-98 | 82 |
| 34 | 86-89 | 99-102 | 82.5 |
| 36 | 90-93 | 103-106 | 83 |
| 38 | 94-97 | 107-110 | 83.5 |
| 40 | 98-102 | 111-114 | 84 |
| 42 | 103-107 | 115-118 | 84.5 |
Bottoms - Women
| Size | Waist (cm) | Hips (cm) | Inseam – Regular (cm) |
|---|---|---|---|
| 4 | 68-70 | 92-95 | 78 |
| 6 | 71-75 | 96-99 | 78 |
| 8 | 76-80 | 100-104 | 79 |
| 10 | 81-86 | 105-109 | 79 |
| 12 | 87-92 | 110-115 | 80 |
Gloves - Men/Unisex
| Size | Hand Circumference (cm) | Hand Length (cm) |
|---|---|---|
| 5 | 18-19 | 16-17 |
| 6 | 19-20 | 17-18 |
| 7 | 20-21 | 18-19 |
| 8 | 21-22 | 19-20 |
| 9 | 22-23 | 20-21 |
| 10 | 23-24 | 21-22 |
| 11 | 24-25 | 22-23 |
| 12 |
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
A down sleeping bag designed for extreme winter conditions, Mammut's Siku Down -18°C offers high thermal insulation while maintaining an excellent warmth-to-weight ratio. Its ergonomic mummy shape limits heat loss and ensures optimal comfort, while its technical materials and advanced features allow you to sleep warm even in very cold weather.
Features
- Comfort temperature: approx. -10 °C
- Limit temperature: -18 °C
- Extreme temperature: approx. -40 °C
- Type: mummy bag
- Insulation: 90/10 down, 700 cuin RDS certified
- Weight: approx. 1700 g
- Down weight: approx. 950 g
- User length: up to 195 cm
- Compressed dimensions: approx. 29 cm
- Closure: two-way central zip
- Treatment: PFC-free water repellent
Materials
- Outer: polyamide
- Insulation: natural down 700 cuin (90/10)
- Lining: recycled polyester
Highlights
✓ Excellent insulation for winter conditions
✓ Lightweight and highly compressible down
✓ Practical central zip for ventilation
✓ Ergonomic cut limiting heat loss
✓ Reinforced head and foot areas against humidity
✓ Integrated thermal collar for added comfort
✓ Good weather resistance thanks to water-repellent treatment
