--- product_id: 441576705 title: "NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking" brand: "nemo equipment" price: "1026315CFA" currency: XOF in_stock: true category: "Nemo Equipment" url: https://www.desertcart.sn/products/441576705-nemo-equipment-sonic-down-mummy-sleeping-bag-ultralight-insulated-made store_origin: SN region: Senegal --- # Next-gen Thermo Gill vents with multistage zipper 100% recycled, bluesign approved fabrics 800 FP hydrophobic down for extreme cold NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking **Brand:** nemo equipment **Price:** 1026315CFA **Availability:** ✅ In Stock ## Summary > ❄️ Elevate your cold-weather adventures with the Sonic — warmth that’s smart, sustainable, and seriously sleek. ## Quick Answers - **What is this?** NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking by nemo equipment - **How much does it cost?** 1026315CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/441576705-nemo-equipment-sonic-down-mummy-sleeping-bag-ultralight-insulated-made) ## Best For - nemo equipment enthusiasts ## Why This Product - Trusted nemo equipment brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Innovative Comfort Design:** Chevron baffle construction and Toester footbox keep loft uniform and feet dry & warm. - • **Down That Performs & Cares:** Premium 800 FP hydrophobic down, PFC-Free and RDS certified for ethical warmth. - • **Eco-Conscious Craftsmanship:** Sustainably made with 100% recycled, bluesign approved shell and liner fabrics. - • **Precision Temperature Control:** Next-gen Thermo Gill vents and multistage zipper let you fine-tune comfort on the fly. - • **Award-Winning Warmth & Versatility:** From -20°F to 40°F, conquer any mountain climate with ease. ## Overview The NEMO Sonic Down Mummy Sleeping Bag is an ultralight, award-winning sleeping bag engineered for extreme cold weather, rated from -20°F to 40°F. It features premium 800 FP hydrophobic down that is PFC-free and RDS certified, combined with 100% recycled, bluesign approved nylon fabrics for a reduced environmental footprint. Next-generation Thermo Gill vents with a multistage zipper system allow precise temperature control, while chevron baffle construction prevents down migration for consistent warmth. Additional innovations like the Toester waterproof footbox and stretch knee construction enhance comfort and durability, making it the ultimate mountaineering and trekking companion backed by a lifetime warranty. ## Description Sonic is built to be the only bag you need from -20°F to 40°F. The Backpacker Editors’ Choice award-winning big-mountain bag offers exceptional warmth and tuneability with a reduced environmental impact. This bag features our next-generation Thermo Gill vents, with a new multistage zipper system that dramatically increases the usable temperature range of the bag and allows fine-tuning of comfort from within. Sonic’s chevron baffle construction better compartmentalizes down, eliminating migration and keeping the down evenly lofted. (Not to mention, it looks awesome.)The shell and liner fabrics are 100% recycled fabrics and bluesign approved, and the premium 800 FP hydrophobic down is 100% Responsible Down Standard (RDS) certified. Years of history in the field yielded detailed upgrades on this bag, including a perfected profile, redesigned draft collar, and bolstered draft tubes. Our proven Toester footbox keeps feet warmer, provides a waterproof barrier against tent wall condensation, and protects down from moisture while drying damp clothes inside the footbox. Adaptable to whatever the mountain throws at it, Sonic continues to reverberate as the ultimate extreme weather companion. All NEMO products carry a lifetime warranty against defects in workmanship and materials to the original owner. ## Features - Nylon - Award-winning design updated for even greater warmth retention and adjustability across temperatures. - Constructed with 100% recycled, bluesign approved shell and liner fabrics. - Second-generation Thermo Gill vents extend the comfort range with a new multistage zipper system. - Overstuffed with premium 800 FP hydrophobic down that is PFC-Free and 100% Responsible Down Standard (RDS) certified, ensuring humane treatment and traceability throughout the supply chain. - Chevron baffle construction better compartmentalizes down for more uniform loft and down migration prevention. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09RN9L16W | | Additional Features | Next-generation Thermo Gills, Chevron baffle construction, Updated profile, Stretch construction at the knees, Draft collar and draft tubes, Toester waterproof/breathable footbox | | Age Range Description | Adult | | Best Sellers Rank | #219,285 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #402 in Camping Sleeping Bags | | Brand Name | NEMO Equipment | | Closure Type | Zipper | | Color | Goodnight Gray / Torch | | Customer Reviews | 4.3 4.3 out of 5 stars (14) | | Fabric Type | Nylon | | Fill Material Type | Down | | Item Dimensions L x W | 77.95"L x 31.5"W | | Item Weight | 1.76 kg | | Manufacturer | Nemo Equipment | | Manufacturer Part Number | 811666034540 | | Material | Nylon | | Maximum Height Recommendation | 72 inches | | Model Number | NM-SNC3-R | | Occupancy | 1 Person | | Seasons | Winter | | Shape | Mummy | | ShellMaterial | Polycarbonate | | Size | Standard | | Sport Type | Camping | | Temperature Rating | Extreme | | UPC | 811666034540 | | Warranty Description | Every NEMO Product is backed by a lifetime warranty against defects in workmanship and materials. | ## Product Details - **Age Range (Description):** Adult - **Brand:** NEMO Equipment - **Color:** Goodnight Gray / Torch - **Material:** Nylon - **Occupancy:** 1 Person - **Seasons:** Winter - **Shape:** Mummy - **Sport:** Camping - **Temperature Rating:** Extreme ## Images ![NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking - Image 1](https://m.media-amazon.com/images/I/61BzIEOmwEL.jpg) ![NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking - Image 2](https://m.media-amazon.com/images/I/816uz6Wvn5L.jpg) ![NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking - Image 3](https://m.media-amazon.com/images/I/81Q9NhsEcpL.jpg) ![NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking - Image 4](https://m.media-amazon.com/images/I/81POWmAVTIL.jpg) ![NEMO Equipment Sonic Down Mummy Sleeping Bag | Ultralight, Insulated, Made for Extreme Cold, Mountaineering, Trekking - Image 5](https://m.media-amazon.com/images/I/51PCCZGODKL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Frequently Bought Together - NEMO Equipment Sonic Down Mummy Sleeping Bag - NEMO Equipment Switchback Foam Sleeping Pad --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/441576705-nemo-equipment-sonic-down-mummy-sleeping-bag-ultralight-insulated-made](https://www.desertcart.sn/products/441576705-nemo-equipment-sonic-down-mummy-sleeping-bag-ultralight-insulated-made) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-08-13*