Sierra Designs Women’s Nitro 0° – Ultralight Down Sleeping Bag for Cold Weather
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Sierra Designs Women’s Nitro 0° – Ultralight Down Sleeping Bag for Cold Weather
Sierra Designs Women’s Nitro 0° – Ultralight Down Sleeping Bag for Cold Weather
Simple construction and a classic mummy bag shape are the hallmarks of one of our best-selling sleeping bags for backpackers who put a premium on low weight, incredible comfort and straightforward tech. The Women's Nitro 0 sleeping bag is designed with durable nylon ripstop and insulated with 800-fill, hydrophobic DriDown™ to keep you toasty warm, even on damp nights. A draft collar seals in the heat when moving around, and sidewall baffles prevent the down from shifting and causing cold spots, but our patented self-sealing foot vent provides relief to hot sleepers without the need to kick off the covers. Top it off with an anti-snag zipper to eliminate sleepy struggles and take greater comfort with this intuitive mummy bag.
Key Features
- PFC-Free 800FP Dridown and 15d nylon fabrics / ultralight weight
- Patented Self Sealing foot vent / fast and easy ventilation
- Draft-dodger collar / helps prevent drafts
- 5" baffle spacing and side wall baffles / helps to keep down from shifting keeping you warmer
- Anti-snag zipper tracks / makes getting in and out easy
Materials
- Insulation: 800FP PFC-Free Dridown
- Shell Fabric: 15d nylon risptop
- Liner Fabric: 15d nylon risptop
Tech Specs
- EN Limit Temp Rating: 2F / -17C
- EN Comfort Temp Rating: 15F / -9C
- Fill Weight: 26 oz / 736 g
- Minimum Weight: 2 lb 7 oz / 1.11 kg
- Fits Up To: 5' 8" / 173 cm
- Length: 74in / 188 cm
- Shoulder Circumference: 58" / 147 cm
- Hip Circumference: 58" / 147 cm
- Footbox Circumference: 39" / 99 cm
- Mesh Stoarge Bag Size (LxW): 20 x 12" / 51 x 31 cm
- Stuff Sack Size (L x W): 16 x 9" / 41 x 23 cm
- SKU: 70604618R
Delivery & Shipping Policy
Dispatch
- Orders are dispatched within 1–2 working days after payment is received.
- Dispatch times may vary during busy periods.
UK Delivery
- UK orders are shipped using FedEx and Royal Mail.
- Delivery times are estimates only.
- All UK orders are sent with tracking.
International Delivery
- Orders outside the UK are shipped using FedEx, UPS, DHL, or Royal Mail.
- Delivery times vary by destination.
- All international orders are sent with tracking.
- Customers are responsible for any customs duties or import charges.
Receiving Your Order
When your order arrives, please:
- Check the package for any visible damage before accepting your delivery.
- Ensure all items listed in your order are included.
- Notify us promptly at Info@s2as.com if your order arrives damaged, incomplete, or incorrect.
- Keep all packaging until you are satisfied your order is complete and in good condition.
Delays & Issues
- Surface 2 Air Sports is not responsible for delays caused by couriers, customs, or events beyond our control.
- We are not responsible for delays or loss caused by incorrect delivery information provided at checkout.
Refund & Returns Policy
Surface 2 Air Sports
Returns
You must notify Surface 2 Air Sports of your intent to return an item within 14 days of the order date.
To initiate a return, please email Info@s2as.com within this 14-day period. Once we receive your request, we will email you return instructions and a Return Authorisation (RA) number.
Approved returns must be shipped back to us within 30 days of the order date.
Return eligibility
- The item must be unused, uninstalled, and in original condition.
- The item must be in its original packaging.
- A valid Return Authorisation (RA) number must be included with your return.
Return shipping
All returns must be sent back to us at the buyer’s cost. We do not provide prepaid return labels, and original shipping charges are non-refundable.
Returns requested after 14 days from the order date, items shipped after 30 days from the order date, or returns sent without an RA number may not be accepted.
Refunds
Once your return is received and inspected, we will notify you of the approval or rejection of your refund.
If approved, refunds will be issued to the original payment method. A 2% refund processing fee will be deducted from all refunds.
Refund processing typically takes 5–10 business days, depending on your payment provider.
Original shipping charges are non-refundable, unless the return is due to an error on our part.
Price Match
At Surface 2 Air Sports (S2AS), we believe you shouldn’t have to choose between the best price and the best service. If you find the same product cheaper elsewhere from an authorised UK retailer — we’ll match it.
How Our Price Match Works
- Find the identical product at a lower price (UK authorised retailer).
- Send us the details using the form below before checkout.
- We’ll verify it and confirm quickly.
Price Match Conditions
- Product must be identical (brand, model, size, colour, year).
- Competitor must be a UK-based authorised retailer.
- Item must be in stock and available for immediate purchase.
- Competitor price must include VAT and delivery.
- Request must be made before completing your order.
What We Don’t Match
- Marketplace sellers (Amazon, eBay, Facebook Marketplace).
- Private sellers or clearance errors.
- Members-only, bundle, or finance-only promotions.
- Used, refurbished, or ex-display items.
Found a Better Price?
Send us the details and we’ll take care of the rest.
Price Match Request Form
Price Match FAQs
How long does a price match take?
Most requests are reviewed within one business day, often faster during opening hours.
Do you price match after purchase?
No — all price match requests must be submitted before checkout.
Does the competitor have to be UK-based?
Yes, the retailer must be UK-based and an authorised brand stockist.
Does shipping count in the price?
Yes — we compare the total price including VAT and delivery.
Price Match Contact Form
Found an item cheaper elsewhere? we want to know send it to us, So we can look at matching the price for you with the Service you expect from S2AS.
