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Thermarest Boost 650 -6C

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    Purchase Thermarest Boost 650 -6C

    Thermarest Boost 650 -6C

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    Full Description

    The Thermarest Boost 650 -6C is designed for three-season adventures, this innovative sleeping bag redefines versatility with its adjustable shape and warmth. Whether you're a side sleeper, a restless mover, or simply someone who loves to sprawl out, the Boost 650's semi-rectangular design offers the space you need to sleep in total comfort. But what truly sets it apart is the WarmZip technology, a game-changing feature that lets you transform the bag into a thermally efficient mummy shape, adding up to 6°C of warmth when the temperature drops.

    The Boost 650 isn't just about sleeping—it's about living comfortably in the outdoors. The multi-use arm holes allow you to access the WarmZip, read a book, or even play cards without leaving the cozy confines of your sleeping bag. Too warm? Use the arm holes or the two-way side zipper to ventilate and regulate your temperature. Every detail has been meticulously crafted for convenience, from the YKK anti-snag zippers to the cinchable hood and puffy draft collar. Plus, the zoned insulation ensures maximum warmth where you need it most, while the eco-conscious materials—100% recycled nylon shell and liner with PFAS-free DWR coating—make this bag as kind to the planet as it is to you. Lightweight, packable, and built for performance, the Boost 650 is your ticket to a restful night under the stars.

    Thermarest Boost 650 -6C Features

    • 20D 100% Recycled Nylon Rip Stop
    • 650-fill, RDS-certified hydrophobic down
    • WarmZip Tech: Patent-pending center zipper design zips up to reduce the bag’s internal space and tuck insulation around the sleeper to boost warmth by up to 10F/6C.
    • Multi-Use Arm Holes
    • YKK anti-snag zippers
    • Cinchable hood
    • Zipper draft tube
    • Puffed draft collar
    • Two-way entry zipper

    Size Guide

    Size EN
    Comfort
    EN
    Limit
    EN
    Extreme
    Inside
    Width
    Inside
    Foot
    Max User
    Height
    Fill Fill
    Weight
    Total
    Weight
    Packed
    Size
    Regular 0°C -6°C -23°C 82cm 78cm 183cm 650 Down 650g 1.21kg 32cm x 19cm
    Long 0°C -6°C -23°C 83cm 78cm 198cm 650 Down 730g 1.4kg 33cm x 19cm


    Please note Extreme temperatures are at the point of danger to health.

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