Helium 450 -1 to -7C Down Sleeping Bag Right Hand Zip 2026

Description

The Mont Helium 450 is an ultralight three- to four-season down sleeping bag designed to deliver exceptional warmth with minimal weight and pack space. Weighing just 850 g, it is a versatile choice for hikers travelling through a wide range of climates, from coastal walks to sub-alpine environments.

Premium 850+ loft Muscovy down provides an excellent warmth-to-weight ratio, while the DWR Loft treatment improves resilience and helps maintain warmth in damp conditions. The lightweight 10D nylon shell and lining keep weight to a minimum without compromising durability, making the Helium 450 particularly well suited to lightweight and fast-moving adventures.

Dual zippers allow flexible temperature regulation, while the compact design maximises valuable space in your pack. With its combination of high-loft down, low weight and versatile temperature range, the Helium 450 is an excellent choice for hikers looking to minimise pack weight without sacrificing warmth.

Mont Helium 450 Down Sleeping Bag Features

• Ultralight three- to four-season down sleeping bag
• Designed for lightweight hiking across a range of climates
• Suitable for coastal walks through to sub-alpine elevations
• 850+ loft premium Muscovy down provides exceptional warmth-to-weight performance
• RDS down fill
• DWR Loft treatment improves resilience and warmth in damp conditions
• Lightweight 10D × 10D nylon shell and lining
• 520 thread count fabric weighs only 26 g/m²
• Hot-rolled cire treatment helps prevent down leakage and improves durability
• Dual zippers allow flexible temperature regulation
• Compact design maximises available pack space
• Excellent warmth for its weight
• Available in Women's/Small, Standard and Extra Large sizes
• Standard size available with left or right zip options

Specifications