{"product_id":"ultralight-waterproof-envelope-camping-sleeping-bag-4-season","title":"Ultralight Waterproof 4 Season Envelope Camping Sleeping Bag","description":"\n\u003ch2\u003eSleep Comfortably Anywhere – The Ultimate Camping Sleeping Bag\u003c\/h2\u003e\n\u003cp\u003eWhether you're backpacking through mountain trails, car camping under the stars, or setting up at a festival, the \u003cstrong\u003eUltralight Waterproof Envelope Sleeping Bag\u003c\/strong\u003e by Sponge Traveller is your go-to sleep system for all-season adventures. Built tough, yet soft enough for a great night's sleep, this bag combines performance and portability in one compact package.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eMade in Mainland China.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Water-Resistant Shell:\u003c\/strong\u003e Crafted from \u003cstrong\u003e190T anti-tear polyester\u003c\/strong\u003e with a waterproof outer shell, this sleeping bag locks in warmth even in damp or wet conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSoft, Skin-Friendly Interior:\u003c\/strong\u003e The inner lining is made from \u003cstrong\u003e190T polyester pongee\u003c\/strong\u003e — breathable, ultra-soft, and gentle against your skin for a cozy night's rest.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHollow Cotton Fill:\u003c\/strong\u003e Generous hollow cotton filling provides excellent insulation, keeping you warm during spring, autumn, and mild winter nights (comfort temperature: 5°C–15°C \/ 41°F–59°F).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Temperature Ratings:\u003c\/strong\u003e Available in multiple seasonal variants — Summer (25°C+), Spring\/Autumn (10°C–20°C), and Winter (0°C–10°C) — so you can find the perfect match for your climate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnvelope Style with Smart Zipper Design:\u003c\/strong\u003e The generous envelope shape gives you room to move, while the \u003cstrong\u003ebottom zipper\u003c\/strong\u003e lets you vent your feet for airflow when temperatures rise.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpliceable Design:\u003c\/strong\u003e Connect two sleeping bags together to create a double sleeping bag — perfect for couples or extra room on cold nights.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact \u0026amp; Packable:\u003c\/strong\u003e Comes with its own \u003cstrong\u003ecompression bag\u003c\/strong\u003e featuring two tightening straps. Compresses to roughly half its original size, making it easy to fit in or attach to your backpack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLengthened Fit:\u003c\/strong\u003e Designed for adults up to 1.8m–2m (5'11\"–6'7\") in height for a comfortable, full-length sleep experience.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSponge Traveller\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStyle\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEnvelope Type\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e220 x 75 cm (86\" x 29\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.8 kg (1.8 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOuter Fabric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e190T Anti-Tear Polyester (Waterproof)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInner Fabric\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e190T Polyester Pongee (Soft \u0026amp; Breathable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHollow Cotton\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack, Green\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuitable For\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAdults (up to 2m height)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeason\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSpring, Autumn (Multi-season options available)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose This Sleeping Bag?\u003c\/h3\u003e\n\u003cp\u003eFrom weekend hiking trips to extended backcountry expeditions, this sleeping bag is engineered to keep you warm, comfortable, and ready for whatever the outdoors throws at you. Its lightweight, compressible design means it won't weigh you down on the trail, and the versatile temperature range makes it suitable for most three-season adventures.\u003c\/p\u003e\n\n\u003ch3\u003eExplore More Outdoor \u0026amp; Camping Essentials\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/1-5l-portable-hydrogen-water-bottle-hydrogen-rich-sports-kettle\"\u003e1.5L Hydrogen Water Bottle – Portable Hydrogen-Rich Sports Kettle\u003c\/a\u003e – Stay hydrated on every adventure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/1000ml-portable-urinal-bottle-unisex-travel-camping-toilet-aid\"\u003e1000ML Portable Urinal Bottle – Unisex Travel \u0026amp; Camping Aid\u003c\/a\u003e – A handy companion for long outdoor trips.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eExpert Camping Resources\u003c\/h3\u003e\n\u003cp\u003eFor expert guidance on outdoor safety and Leave No Trace principles, visit the \u003ca href=\"https:\/\/www.nps.gov\/subjects\/camping\/index.htm\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eNational Park Service Camping Guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What temperature rating is this camping sleeping bag suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: This sleeping bag (Spring\/Autumn variant) is designed for comfortable temperatures between approximately 10°C and 20°C (50°F–68°F). Other variants are available for summer (25°C+) and winter (0°C–10°C) use, so you can choose the right bag for your specific camping conditions.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this sleeping bag suitable for tall adults?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This sleeping bag features a lengthened design measuring 220 x 75 cm (86\" x 29\"), making it comfortable for adults up to 2 metres (approximately 6'7\") in height.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can two sleeping bags be zipped together to make a double?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, this envelope-style sleeping bag features a spliceable design, allowing you to connect two compatible bags together for a double sleeping bag — ideal for couples or those who prefer extra room.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How compact does the sleeping bag pack down?\u003c\/h4\u003e\n\u003cp\u003eA: The sleeping bag comes with its own compression bag featuring two tightening straps. When compressed, it reduces to roughly half its original volume, making it easy to fit inside or attach to the outside of a standard backpack.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the outer shell of this sleeping bag waterproof?\u003c\/h4\u003e\n\u003cp\u003eA: Yes, the outer shell is made from 190T anti-tear polyester with a waterproof finish, helping to repel moisture and keep the hollow cotton fill dry and insulating during damp outdoor conditions.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What temperature rating is this camping sleeping bag suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This sleeping bag (Spring\/Autumn variant) is designed for comfortable temperatures between approximately 10°C and 20°C (50°F–68°F). 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