--- product_id: 161849365 title: "Spark 28" brand: "sea to summit" price: "€ 18.35" currency: EUR in_stock: false reviews_count: 7 url: https://www.desertcart.be/products/161849365-spark-28 store_origin: BE region: Belgium --- # 1.1 lbs ultralight & compressible 850 fill power ULTRA-DRY down 28°F (−2°C) 3-season rating Spark 28 **Brand:** sea to summit **Price:** € 18.35 **Availability:** ❌ Out of Stock ## Summary > 🛌 Sleep Light, Dream Big: Ultralight warmth that keeps up with your wildest adventures. ## Quick Answers - **What is this?** Spark 28 by sea to summit - **How much does it cost?** € 18.35 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/161849365-spark-28) ## Best For - sea to summit enthusiasts ## Why This Product - Trusted sea to summit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Level Warmth:** Premium 850 fill power down treated with ULTRA-DRY technology keeps loft and insulation performance even in damp conditions—stay cozy without compromise. - • **Trusted & Certified:** Responsible Down Standard certified for ethical sourcing, backed by a lifetime manufacturer guarantee—sleep soundly knowing your gear is as responsible as it is reliable. - • **Tailored for Comfort:** Contoured mummy shape with hood and zipper draft tubes ensures a snug, natural sleeping position that adapts to your body for deep rest on the trail. - • **Featherweight Freedom:** At just 1.1 lbs, this sleeping bag packs down to a tiny 2.5L—perfect for minimalist backpackers and bikepackers who refuse to be weighed down. - • **Durable & Breathable Shell:** Constructed from ultralight 10D nylon shell and 7D liner fabric, balancing minimal bulk with rugged durability and moisture management. ## Overview The Sea to Summit Spark Ultralight Down Sleeping Bag is a 28°F-rated, ultralight mummy-style sleeping bag designed for 3-season backpacking and touring. Featuring 850 fill power ULTRA-DRY down insulation, a compressible 10D nylon shell, and a contoured fit with draft tubes, it weighs just 1.1 pounds and compresses to 2.5 liters. Ethically sourced and built for durability, it’s ideal for active professionals who demand high performance and minimal bulk on every trip. ## Description desertcart.com : Sea to Summit Spark Ultralight Down Sleeping Bag, 28-Degree, Regular : Sports & Outdoors Review: great sleeping bag for warmer temperatures - This bag is well made and packs easily into a small sack. I often use it for sleeping at my workplace and the cube storage bag is perfect for my office locker! So far I have only used it a 70F and I am very comfortable sleeping with the zipper down. I like the look and feel of it. I generally only use sleeping bags down to about 20F above their rating and this feel like I would be comfortable down to about 50F zipped up. Review: Cheap Zipper / Doesn't Breath - This only gets a second star because it actually is really light. The rest is not worth the money. The zipper separates to easily and you have to fumble to fix it at night in the tent. The material is very strange. It doesn't really have any breathability. Even if your not too hot your body moisture seems to stay in the bag, so it feels like you are sleeping in a gargage bag. ## Features - nylon - 28-degree Fahrenheit (-2-degree Celsius) ultralight down sleeping bag for 2-season backpacking, bike packing, and touring; technical mummy shape features hood and zipper draft tubes - High-loft 850 fill power down insulation (Responsible Down Standard certified) treated with ULTRA-DRY Down to improve reaction to moisture, retaining loft and performance - Ultralight, compressible 10D nylon shell with 7D liner fabric for minimal weight and bulk; one-third length, left-side YKK zipper - Contoured mummy shape provides adequate room for a natural sleeping position; baffle construction in the torso and sewn-through in the leg area - Regular size bag has a max user height of six feet; bag weighs 1.1 pounds; compresses to 2.5 liters with included Ultra-Sil compression sack ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07PGKYLCC | | Additional Features | Ultralight, Compressible | | Age Range Description | Adult | | Best Sellers Rank | #1,721,059 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2,503 in Camping Sleeping Bags | | Brand Name | Sea to Summit | | Closure Type | Zipper | | Color | blue | | Customer Reviews | 4.5 4.5 out of 5 stars (61) | | Fabric Type | nylon | | Fill Material Type | Down | | Global Trade Identification Number | 09327868094981 | | Item Dimensions L x W | 78"L x 30"W | | Item Weight | 1.1 Pounds | | Manufacturer | Sea to Summit | | Manufacturer Part Number | S2121 | | Material | Nylon | | Maximum Height Recommendation | 6 Feet | | Model Number | ASP2-R | | Occupancy | 1 Person | | Seasons | 3 Seasons | | Shape | Mummy | | ShellMaterial | Nylon | | Size | Standard | | Sport Type | Backpacking | | Temperature Rating | 28°F | | Unit Count | 1.0 Count | | Warranty Description | Manufacturer guarantee against defects in materials or workmanship for the lifetime of the product | ## Product Details - **Age Range (Description):** Adult - **Brand:** Sea to Summit - **Color:** blue - **Material:** Nylon - **Occupancy:** 1 Person - **Seasons:** 3 Seasons - **Shape:** Mummy - **Special Feature:** Ultralight, Compressible - **Sport:** Backpacking - **Temperature Rating:** 28°F ## Images ![Spark 28 - Image 1](https://m.media-amazon.com/images/I/617HBZGVG8L.jpg) ![Spark 28 - Image 2](https://m.media-amazon.com/images/I/51qsKrmZdhL.jpg) ![Spark 28 - Image 3](https://m.media-amazon.com/images/I/91XdQq5RzmL.jpg) ![Spark 28 - Image 4](https://m.media-amazon.com/images/I/81TBOs8U25L.jpg) ![Spark 28 - Image 5](https://m.media-amazon.com/images/I/81IYVx4k5OL.jpg) ## Questions & Answers **Q: does it have a zippable footbox?** A: Please see the video and let me know if you have any questions ## Customer Reviews ### ⭐⭐⭐⭐⭐ great sleeping bag for warmer temperatures *by W***. on November 21, 2022* This bag is well made and packs easily into a small sack. I often use it for sleeping at my workplace and the cube storage bag is perfect for my office locker! So far I have only used it a 70F and I am very comfortable sleeping with the zipper down. I like the look and feel of it. I generally only use sleeping bags down to about 20F above their rating and this feel like I would be comfortable down to about 50F zipped up. ### ⭐⭐ Cheap Zipper / Doesn't Breath *by C***R on October 17, 2022* This only gets a second star because it actually is really light. The rest is not worth the money. The zipper separates to easily and you have to fumble to fix it at night in the tent. The material is very strange. It doesn't really have any breathability. Even if your not too hot your body moisture seems to stay in the bag, so it feels like you are sleeping in a gargage bag. ### ⭐⭐⭐ Review *by F***A on July 3, 2024* PONTO POSITIVO: O saco é realmente leve, isso é o maior ponto positivo do produto, macio, aquece e é super compacto na hora de colocar na bolsa pra transporte. PONTO NEGATIVO: com o uso ele vai soltando algumas plumas, após acordar em todas as vezes que utilizei, achei plumas na minha roupa, o zíper precisa de cuidado para abrir e fechar, caso contrário ele pode pegar no tecido. A cor clara é outra questão, se não tomar cuidado vai sujar muito rápido. Então pense nisso antes de comprar, se você pretende comprar um saco de dormir que dure a vida toda, talvez esse não seja o caso, acredito que ele vá durar por uns bons anos ainda mas a longo prazo não sei se vai reter tanto o calor devido a essa perca de pluma com o uso. Se optar por comprar, seja cuidadoso com o zíper, siga as instruções de armazenamento da marca para ajudar a prolongar a vida útil do saco e esteja ciente de que vai perder pluma e isso pode gerar pontos frio no saco de dormir e tem a questão da cor que é clara e suja fácil. Quanto ao tamanho, não recomendaria ele para uma pessoa maior de 180cm. --- ## 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.be/products/161849365-spark-28](https://www.desertcart.be/products/161849365-spark-28) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-05-20*