Insulated Jackets

Insulated Jackets NZ — Buyer's Guide & FAQs

An insulated jacket is one of the most versatile pieces of kit in any NZ tramper's wardrobe. Whether you are layering up for a cold ridge crossing on the Routeburn, pulling on warmth at a hut after a long day, or just staying comfortable at camp, the right insulated jacket keeps you functional when temperatures drop. The key choices are down versus synthetic, and fill power — and understanding them makes it easy to pick the right jacket for how and where you tramp.

Down vs Synthetic Insulation

Down offers unmatched warmth-to-weight ratio and compresses small — valuable when every gram in your pack matters. For dry conditions and clear alpine days in NZ, down is hard to beat. The limitation is performance when wet: untreated down collapses and loses its warmth. Hydrophobic down treatments (such as Rab's Hydrophobic Down) improve moisture resistance significantly but are not a substitute for a waterproof shell in serious rain.

Synthetic insulation performs better in wet conditions — it retains more warmth when damp and dries faster. It is typically heavier and less compressible than down at the same warmth level, but is more robust across NZ's variable, often wet conditions. For shoulder-season tramping or routes with frequent rain exposure, synthetic is a sound choice. The Rab Valiance is a strong synthetic option for NZ conditions.

Fill Power: 600, 700, 800+

Fill power measures down loft in cubic inches per ounce. Higher fill power means lighter weight for equivalent warmth. 600-fill is warm and affordable; 700-fill is the sweet spot for most tramping; 800+ fill power is premium and ultralight. The Rab Microlight Alpine uses 750-fill hydrophobic down — an excellent balance of warmth, weight, and wet-weather resilience that suits NZ conditions well.

Layering for Tramping

An insulated jacket is your mid-layer — worn over a base layer and under your waterproof shell when stopped or in cold conditions. Remove it when you start moving hard to avoid overheating. A jacket that packs into its own pocket is far more convenient to manage on the go.

Browse our full range of insulated jackets, or pair your mid-layer with a quality waterproof shell to complete your layering system.

Frequently Asked Questions