Best Marmot Mummy Sleeping Bags of 2025

The Marmot Trestles 30 is an exceptional mummy sleeping bag designed for three-season use. Its synthetic Spirafil High Loft insulation provides maximum warmth while remaining lightweight, ensuring comfort during your camping or trekking adventures. The anatomically optimised fit enhances insulation and comfort, particularly around the head and foot areas. An extra zipper allows for additional ventilation, a crucial feature when temperatures fluctuate. The durable 70D nylon Ripstop outer material is both breathable and windproof, offering protection against the elements.

The Marmot NanoWave 35 is a versatile mummy sleeping bag designed for three-season use. It features synthetic Spirafil High Loft insulation, ensuring you stay warm and comfortable during your camping or trekking adventures. The anatomically optimised fit enhances insulation in the head and foot areas, providing extra comfort as you sleep. Additionally, the breathable and windproof 50D nylon Ripstop outer material includes an extra zipper for ventilation, making it adaptable to changing temperatures.

The Marmot Voyager 55 is a mummy-style sleeping bag designed for backpacking and outdoor adventures. Its SpiraFil high-loft insulation ensures maximum warmth and durability, keeping you cosy even in cooler conditions. Weighing only 1 pound, 8 ounces, it's highly compressible, making it perfect for those who need to save space and weight on their travels. The full-length, locking YKK two-way zipper adds convenience, allowing you to easily enter and exit the bag while ensuring a secure closure during use.

The Marmot NanoWave 45 is an ultra-light mummy sleeping bag designed for summer camping and trekking. Its synthetic Spirafil High Loft insulation ensures maximum warmth while keeping the bag lightweight, making it easy to carry on your adventures. With an anatomically optimised fit, you'll enjoy improved comfort and insulation, particularly around the head and feet. The breathable 50D nylon Ripstop outer material is windproof, providing extra protection against the elements, and the additional zipper allows for ventilation when needed.

The Marmot Trestles 15 is a three-season mummy sleeping bag designed specifically for women. Its synthetic Spirafil High Loft insulation provides exceptional warmth while remaining lightweight, making it ideal for your outdoor adventures. The anatomically optimized fit enhances comfort and insulation, particularly around the head and foot areas. An extra zipper allows for additional ventilation, ensuring you can adjust your temperature easily during the night.

The Marmot Micron 40 Sleeping Bag is a lightweight, mummy-style sleeping bag filled with premium 650+ duck down, ensuring warmth even in negative temperatures. Its anatomically optimised fit enhances insulation and comfort, making it ideal for your outdoor adventures. The breathable and windproof nylon mini ripstop outer material adds protection, while the sleeping bag's ability to fully open into a cover offers added versatility. You’ll appreciate the hidden inside pocket for safely storing your valuables during your camping trips.

The Marmot Micron 40 is an ultra-light mummy sleeping bag that features premium 650+ duck down fill, ensuring warmth even in negative temperatures. Its anatomically optimised fit enhances insulation and comfort, making it ideal for a restful night's sleep. The breathable and windproof 20D nylon mini ripstop outer material also provides optimal ventilation for warmer weather. You can completely open the sleeping bag and use it as a cover, while the hidden inside pocket is perfect for storing your essentials like keys and a mobile phone.

The Marmot Lost Coast 30 is a lightweight mummy sleeping bag designed for all seasons. Its 600+ Fill Down with Down Defender ensures excellent insulation, even in damp conditions, keeping you warm and comfortable. The anatomically optimised fit in the head and foot areas enhances comfort while you sleep. With a breathable and windproof exterior made from 100% recycled polyester, this bag is treated with DWR for moisture resistance. You can also fully open it for use as a cover, adding versatility to your camping gear.

The Marmot Teton Mummy Bag is designed for extreme conditions, featuring premium 650 duck down fill that ensures warmth even in temperatures as low as -40°C. Its anatomically optimized fit in the head and foot areas enhances insulation and comfort, catering perfectly to your sleeping needs. The breathable, windproof 20D nylon ripstop material is treated with DWR to resist moisture, making it ideal for outdoor adventures. With full-length zippers on both sides, you can open the bag completely, allowing it to double as a cover when needed.

The Marmot Ultra Elite 30 is a lightweight mummy sleeping bag designed for summer camping and trekking. It features ElixeR micro, a premium blend of fibres that provides excellent warmth and a soft feel. With its anatomically optimized fit and additional ventilation, you can enjoy better insulation and comfort while sleeping. The breathable and windproof outer material, along with the draft collar and hood, ensures you stay warm in various temperatures ranging from 5°C to -14°C.