Are sleeping bag liners worth it?

Yes, for most NZ trampers. A liner extends the temperature range of your sleeping bag by 3–8°C, keeps your bag cleaner (reducing wash frequency), and doubles as a standalone sheet in warm huts. The weight penalty is minimal — silk liners can weigh under 100g.

What material sleeping bag liner is best?

Silk liners are the best warmth-to-weight option and feel comfortable against skin. Merino liners are slightly warmer and more durable. Cotton is comfortable but heavy. Thermolite liners offer the most additional warmth but are bulkier.

Can I use a sleeping bag liner by itself?

Yes, in warm conditions (DOC huts in summer, hostels, warm weather camping) a liner alone is enough. It's a versatile piece of kit for travel and tramping.

How much warmth does a sleeping bag liner add?

Depending on material: cotton adds 3–5°C, silk adds 4–7°C, merino adds 5–8°C, and synthetic Thermolite liners can add up to 13°C. Results vary by liner brand and individual.

How do I wash a sleeping bag liner?

Most liners can be machine washed on a gentle cycle with mild detergent. Check the specific care instructions — silk liners may require hand washing or a delicates cycle. Liners dry quickly compared to full sleeping bags.

Will a liner damage my sleeping bag?

No — a liner protects your sleeping bag from body oils and sweat, reducing the need to wash the bag itself. This actually extends the life of your sleeping bag.