Siku -21C Sleeping Bag - Women's
- 3 in stock
- Backordered, shipping soon

The measurements shown are for guidance only and are based on body measurements. The actual fit may vary depending on the garment's cut and the desired style. For optimal choice, trying on the garment remains the best option.
How to Measure
Chest: Measure around the fullest part of your chest, under your armpits.
Waist: Measure around your natural waistline.
Hips: Measure around the widest part of your hips.
Sleeve Length: Measure from the center of your back, over your shoulder, down to your wrist.
Inseam: Measure from the crotch to the ankle.
Foot Length: Measure from the heel to the longest toe.
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 |
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
DESCRIPTION
Mammut Siku -21C Women's sleeping bag, designed for rigorous winter conditions in camping, trekking or alpine expeditions. Its female-specific cut optimizes heat retention, while its enveloping mummy construction ensures excellent thermal comfort even in very cold weather. Available in synthetic or down versions, it offers reliable insulation and consistent performance in cold and wet environments.
FEATURES
- Comfort temperature: -13 °C
- Limit temperature: -21 °C
- Extreme temperature: -44 °C
- Construction: mummy
- Female-specific cut for better insulation
- Adjustable 3D hood with thermal collar
- YKK central zipper with insulating flap
- Use: 4 seasons / winter
MATERIALS
- Outer: 100% polyamide with water repellent treatment (DWR)
- Insulation: Synthetic polyester fibers (Fiber version)
- Recycled materials and bluesign / RDS certifications (depending on version)
HIGHLIGHTS
✓ Excellent warmth for extreme winter conditions
✓ Optimized female-specific cut to limit heat loss
✓ Efficient insulation even in humid environments (synthetic version)
✓ Very good warmth-to-weight ratio
✓ Increased comfort with 3D hood and thermal collar
✓ Practical central zipper for ventilation and easy access
✓ Durable and responsible materials