Ultralight Clothing

Consider expected temperature, time spent stationary and your other layers. Jacket weight alone does not tell you the temperature at which you will feel comfortable.

• While hiking: consider effort and ways to regulate warmth.
• At stops or camp: you need to retain warmth with less activity.
• Compare fill, construction, coverage and sizing to fit planned layers without compressing insulation.

There is no universal temperature chart for light, medium or heavy jackets. Check the model’s guidance and your experience; an insulated garment does not automatically replace rain protection.

Compare coverage, wind, freedom of movement and ventilation for your route.

• Rain jacket: offers a closer fit. Check the hood, closures and compatibility with your backpack.
• Poncho: may ventilate through the sides and cover a pack if designed for it. Consider fabric movement in wind and possible snagging.

Not every poncho fits over every pack, and jacket ventilation varies. Check dimensions and stated protection. A wind shell is not equivalent to a waterproof rain jacket.

Consider which parts of your legs need protection and how you will hike. A rain skirt and trousers do not provide equivalent coverage.

• Skirt: usually allows ventilation and can be put on or removed without taking off footwear; check length, closure and wind security.
• Trousers: also cover the lower legs; consider movement, ventilation and putting them on over shoes.

Consider wind-driven rain, vegetation and exposure. A skirt cannot replace waterproof trousers in every situation or keep all footwear dry on its own.

Breathability helps release some of the water vapour produced while hiking, but does not guarantee a dry interior during hard effort.

• Consider vents, openings and fit as well as fabric.
• Adjust pace and layers to limit sweat buildup.
• Compare breathability figures only when measured by equivalent test methods.

Internal moisture does not automatically indicate a leak. Check whether it comes from sweat, condensation or water entry, and follow the manufacturer’s cleaning and care instructions.

Do not assume it can. A wind shell mainly reduces wind exposure. Its fabric may shed some water without providing the rain protection of a waterproof garment.

• Check whether the manufacturer claims waterproof protection for the complete model.
• Consider a wind shell for regulating protection while hiking, as conditions allow.
• For expected rain, choose suitable protection and check seams, closures and coverage.

Low weight or a water-repellent finish alone does not make a wind shell waterproof. Choose layers around forecast conditions and use, rather than grams alone.