Mummy Sleeping Bags vs Rectangular Sleeping Bags: Which Performs Better for Backpacking in 2025?
When it comes to backpacking in 2025, choosing between a mummy sleeping bag and a rectangular sleeping bag is more than a matter of preference—it's about performance, weight, and warmth.
Mummy Sleeping Bags: Built for Efficiency
In 2025, mummy bags continue to dominate among ultralight backpackers. Their contoured shape hugs the body, minimizing dead air space and maximizing heat retention. New materials like graphene-infused insulation and pre-shaped thermal hoods make them even warmer and lighter than in previous years. If weight and warmth matter most, mummy bags win.
Rectangular Sleeping Bags: Comfort and Space
Rectangular bags, on the other hand, are gaining traction among casual hikers and campers who prioritize comfort. In 2025, several brands now offer compressible rectangular models with decent thermal ratings and lightweight synthetic fills. They’re more spacious, allowing for better movement—ideal for side sleepers or warmer conditions.
Verdict: Best for Backpacking?
If you're tackling alpine trails or cold-weather adventures, the mummy sleeping bag still performs better. But for low-elevation or summer treks, new lightweight rectangular options offer surprising comfort without too much bulk. In 2025, your sleeping bag choice should align with your adventure—not just tradition.
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Mummy Sleeping Bags vs Rectangular Sleeping Bags: Which Performs Better for Backpacking in 2025?
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