Boost 650 20F / -6C Regular sleeping bag

The Thermarest Boost 650 20F/-6C Regular sleeping bag is designed for cold nights with unrivalled comfort. It combines hydrophobic down fill with an adaptable design that adjusts easily to temperature changes for maximum versatility and efficiency.

Ideal for three-season hiking, it particularly suits those moving between cool and milder conditions.

An adaptable sleeping bag with exceptional thermal protection

The Thermarest Boost 650 20F/-6C Regular sleeping bag combines thermal protection and comfort:

• Its semi-rectangular design provides excellent freedom of movement and converts into a mummy bag for greater warmth when temperatures drop. WarmZip™ technology lets you adjust your comfort using the central zip, reducing interior space and bringing the fill closer to your body to increase thermal insulation.
• Hydrophobic down fill, RDS-certified and PFAS-free, is strategically distributed in key areas through optimised baffling that eliminates cold spots. It stays dry and retains excellent loft.
• To retain warmth, draught tubes and collars run along the zips and around the shoulders.

Practical sleeping bag features

The boost 650 20F / -6C regular has 2 multi-purpose openings on the front for putting your arms out. Handle objects, read or adjust the WarmZip system without uncovering yourself. These openings also provide ventilation.

A two-way zip opens the sleeping bag from head to foot for even greater comfort and versatility. You can uncover just your feet or open it fully on mild summer nights.

An internal pocket holds your personal belongings.

Storage sack and compression sack included.

 

Other features

• Outer fabric: 100% recycled 20D ripstop Nylon with PFAS-free water-repellent treatment
• Inner fabric: 100% recycled soft 20D Nylon
• Fill: 650 cuin hydrophobic duck down (649 g), RDS-certified and PFAS-free
• Origin: made in Vietnam