How to choose the right size
User height: Measure your total height, barefoot, standing upright.
Choosing the length: For optimal thermal efficiency, choose the length that fits as snugly as possible while still leaving a little space at the feet.
🛌 Sleeping bags – Length
| Bag size | User height (cm) | Internal length of the bag (cm) |
|---|---|---|
| Shorts | up to 168 | 180 |
| Regular | up to 183 | 198 |
| Long | up to 198 | 213 |
👤 Big Agnes sleeping bag cuts
| Cup | Description | Benefits | Recommended use |
|---|---|---|---|
| Unisex / Men | Standard mummy cut, balanced width at shoulders and hips | Good compromise between warmth, comfort, and weight | Trekking, mountaineering, hiking |
| Woman | Shorter cut, narrower shoulders, wider hips | Optimized insulation, better fit for women | Hiking, trekking, camping in cool weather |
| Large | Mummy with broad shoulders and hips | Increased comfort, freedom of movement | Wide sleepers, comfortable use |
| Rectangular | Straight fit with full-length zipper | Maximum comfort, modularity | Camping, van life |
| Quilt / System | Without back insulation, compatible with Big Agnes mattresses | Reduced weight, thermal efficiency | Ultralight, bikepacking |
📐 Internal widths (approximate, depending on the range)
| Cup | Shoulders (cm) | Hips (cm) | Feet (cm) |
|---|---|---|---|
| Standard mummy | 150 – 155 | 135 – 140 | 100 – 105 |
| Large | 160 – 165 | 145 – 150 | 105 – 110 |
| Woman | 145 – 150 | 140 – 145 | 100 – 105 |
Dimensions may vary slightly depending on the Big Agnes model (down or synthetic). The sizes listed correspond to the brand's general recommendations for length and fit.
- Shipping costs: Shipping costs may vary depending on the weight, dimensions of the package, and delivery address. These costs will be calculated and displayed at checkout.
- Free shipping: We offer free shipping on all orders of $150 or more, before taxes and after discounts.
- Oversized products: A shipping fee may apply despite the minimum for free shipping. This applies to oversized products (weight or volume).
Warehouse pickup
You can pick up your order directly from our warehouse to save on delivery costs.
Ready within 4 hours, depending on the pickup schedule at our warehouse at 7250 Clark Street in Montreal.
- Monday: 10:00 a.m. to 4:30 p.m.
- Tuesday: 10:00 a.m. to 4:30 p.m.
- Wednesday: 10:00 a.m. to 4:30 p.m.
- Thursday: 10:00 a.m. to 4:30 p.m.
- Friday: 10:00 a.m. to 12:00 p.m.
Return policies
All sales are final. No exchanges or refunds will be accepted, even if the color, size, or product does not meet your expectations. We encourage you to carefully review your selection before confirming your purchase.
If the product you purchased has a manufacturing defect or is defective, we want to resolve the issue promptly. Please send us an email at info@marchealpin.ca, including a description of the problem and photos of the product in question. Our team will be happy to assist you and find a suitable solution.
Thank you for your understanding of our policy, which allows us to keep our prices so competitive!
Sidewinder SL 20F/-7C Sleeping Bag - Women's
Description
Description
The Big Agnes Sidewinder SL 20 Women's Sleeping Bag is designed specifically for side sleepers looking for warmth and comfort in cool to cold conditions. Its ergonomic shape follows the body's movements when changing sides, while its hybrid insulation combines hydrophobic DownTek™ down and synthetic fibers to retain heat even in damp conditions.
Advantages • Designed for side sleepers with articulated zones
• Hybrid insulation combining the lightness and warmth of down with the moisture resistance of synthetic materials
• Women's specific cut for optimized thermal comfort
• Adjustable hood and collar to limit heat loss
• Compressible and lightweight for easy transport
Features
Features
Payment and security
Payment method
Your payment information is processed securely. We do not store your credit card details and do not have access to your payment information.
Latest products purchased
Alpine Market is
No stores, just deals
Marché Alpin is an online store specializing in outdoor gear. We don't have a physical store, which reduces our costs and allows us to offer the best prices. We buy new products from previous seasons and samples directly from brands. Quantities are always very limited: when it's gone, it's gone.
