Sea to Summit Traverse Synthetic Sleeping Bag 25

The Sea to Summit Traverse Synthetic Sleeping Bag 25 is the lighter sibling of the Traverse 15, sharing the same Thermolite/WaveLoft synthetic insulation but coming in at a lower 1,130 g. The manufacturer-rated comfort of 2°C and limit of -9°C fit a typical three-season use case. Ventilation is handled by a combination of a full-length YKK zip on the left side, a half-length zip on the right, and a separate foot-box zip — the bag can be opened up as needed without removing the whole top layer. A 30D DWR nylon shell and a draft tube complement the fitted, contoured hood that traps heat around the head. Sized for users up to 182 cm, it can be coupled with a second bag into a double and packs into its included sack. The combination of moderate weight, moisture-tolerant synthetic insulation, and flexible ventilation makes it a solid choice for spring and autumn trekking and camping in changeable weather.