{"product_id":"winter-mummy-sleeping-bag","title":"Winter Mummy Sleeping Bag","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable warmth retention\u003c\/strong\u003e: Mummy shape with anatomical hood — traps body heat and reduces cold bridges at the neck and head.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust construction\u003c\/strong\u003e: 400T ripstop nylon outer, water-repellent and tear-resistant. Because a sleeping bag that rips in the middle of the night simply won't do.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-soft lining\u003c\/strong\u003e: 380T polyester lining — skin-friendly and hard-wearing. Comfortable enough to forget you're sleeping outdoors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation that works in the wet\u003c\/strong\u003e: Synthetic hollow-fibre fill (polyester microfibre). Retains its loft and warmth even when damp — unlike down, which collapses in moisture. Easy to wash and hypoallergenic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e11 fill weights from 400 g to 3000 g\u003c\/strong\u003e: From summer bivvy nights (+20 °C) through to harsh winter camping (approx. −25 °C) — choose the exact insulation your trip demands. Temperatures are manufacturer's guidance, not EN 13537 certified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThoughtful details\u003c\/strong\u003e: Two-way zip for ventilation from top or bottom, anti-slip velcro at the collar, adjustable hood drawcord. You control ventilation without losing a degree.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated inner pocket\u003c\/strong\u003e: Because searching for your phone at 3am is rather unpleasant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHanging loops at the foot end\u003c\/strong\u003e: For airing out after a night's camping without the hassle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and portable\u003c\/strong\u003e: Robust compression sack included — easy to fit in your rucksack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions\u003c\/strong\u003e: 210 × 80 × 50 cm (length × shoulder × foot box). Total weight 1.1 to 3.6 kg depending on fill variant. Manufacturer's tolerance ±5%.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWinter Mummy Sleeping Bag — Why Synthetic Is the Honest Choice\u003c\/h2\u003e\n\u003cp\u003eSleeping outdoors in winter without proper kit risks a night in bitter cold that wrecks your comfort and your morning. A bag that lets moisture through or loses its insulation when damp ruins the trip entirely.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis winter mummy sleeping bag\u003c\/strong\u003e pairs a water-repellent 400T ripstop nylon outer with a synthetic hollow-fibre fill that keeps working through condensation and damp conditions — precisely when down fails. With 11 fill weights from 400 g to 3000 g, you cover every season: a light bag for summer bivvies, or a heavyweight build for nights at −25 °C. Built for bivvy bashers, winter campers and trekkers who want kit that's tough, low-maintenance and honest about what it does.\u003c\/p\u003e","brand":"Military Surplus","offers":[{"title":"Green \/ 400g","offer_id":52931401056583,"sku":"FLM-10535511523655-Green--400g","price":99.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 600g","offer_id":52931401089351,"sku":"FLM-10535511523655-Green--600g","price":107.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 800g","offer_id":52931401122119,"sku":"FLM-10535511523655-Green--800g","price":119.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1000g","offer_id":52931401154887,"sku":"FLM-10535511523655-Green--1000g","price":129.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1200g","offer_id":52931401187655,"sku":"FLM-10535511523655-Green--1200g","price":141.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1500g","offer_id":52931401220423,"sku":"FLM-10535511523655-Green--1500g","price":157.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 1800g","offer_id":52931401253191,"sku":"FLM-10535511523655-Green--1800g","price":169.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 2000g","offer_id":52931401285959,"sku":"FLM-10535511523655-Green--2000g","price":179.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 2200g","offer_id":52931401318727,"sku":"FLM-10535511523655-Green--2200g","price":189.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 2500g","offer_id":52931401351495,"sku":"FLM-10535511523655-Green--2500g","price":201.95,"currency_code":"GBP","in_stock":true},{"title":"Green \/ 3000g","offer_id":52931401384263,"sku":"FLM-10535511523655-Green--3000g","price":209.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 400g","offer_id":52931401417031,"sku":"FLM-10535511523655-Blue--400g","price":99.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 600g","offer_id":52931401449799,"sku":"FLM-10535511523655-Blue--600g","price":107.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 800g","offer_id":52931401482567,"sku":"FLM-10535511523655-Blue--800g","price":119.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1000g","offer_id":52931401515335,"sku":"FLM-10535511523655-Blue--1000g","price":129.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1200g","offer_id":52931401548103,"sku":"FLM-10535511523655-Blue--1200g","price":141.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1500g","offer_id":52931401580871,"sku":"FLM-10535511523655-Blue--1500g","price":157.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 1800g","offer_id":52931401613639,"sku":"FLM-10535511523655-Blue--1800g","price":169.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 2000g","offer_id":52931401646407,"sku":"FLM-10535511523655-Blue--2000g","price":179.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 2200g","offer_id":52931401679175,"sku":"FLM-10535511523655-Blue--2200g","price":189.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 2500g","offer_id":52931401711943,"sku":"FLM-10535511523655-Blue--2500g","price":201.95,"currency_code":"GBP","in_stock":true},{"title":"Blue \/ 3000g","offer_id":52931401744711,"sku":"FLM-10535511523655-Blue--3000g","price":209.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0853\/6984\/8135\/files\/sac-de-couchage-adulte-hiver-467.webp?v=1765329986","url":"https:\/\/surplus-military.com\/products\/winter-mummy-sleeping-bag","provider":"Military Surplus","version":"1.0","type":"link"}