Sleeping bags / Sea to Summit / Breeze liner Spark down mummy sleeping bag
Sea to Summit

Breeze liner Spark down mummy sleeping bag

$419
Updated 2026-10-15

This ultralight down mummy sleeping bag features a matching Breeze liner to optimize thermal regulation across changing wilderness climates. The dual-component setup allows campers to adapt their sleep system for varying nighttime temperatures easily.

High-performance down insulation provides exceptional warmth-to-weight efficiency, keeping the overall pack size remarkably small. The tapered mummy design conforms closely to the body to maximize heat retention during cold alpine rests.

Built for minimalist backpackers, this integrated kit delivers dependable comfort and versatile layering options for extended trails. It represents a streamlined approach to lightweight sleeping solutions without compromising on thermal efficiency.

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Breeze liner Spark down mummy sleeping bag
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Sea to Summit
Marked
Sleeping bags Ultralight gear Down Bag liners Mummy bags
Sets
Down Ultralight gear Bag liners Mummy bags Sleeping bags