Therm-A-Rest Boost 32F / 0C Down Sleeping Bag

IDEAL FOR EVERYTHING FROM HIKING TRIPS TO CAMPSITE STAYS, THE BOOST 650 OFFERS RELIABLE COMFORT FOR A GREAT NIGHT’S SLEEP OUTDOORS.

The Boost is crafted with an innovative design that allows you to customise its shape and add warmth whenever you need it, making it one of the most comfortable and versatile sleeping bags ever created. Thanks to its semi-rectangular shape, it offers much more internal space than a traditional mummy bag, giving you the freedom to sleep in any position you prefer, whether side-sleeping, curled up, or fully stretched out.

This extra space means you won’t feel restricted or cramped, allowing you to sleep soundly and comfortably throughout the night. However, with more space comes the need for more warmth to keep you cosy, and that is where the Boost really shines. Its thoughtful design ensures that you stay warm and comfortable by letting you adjust the warmth to suit your needs, making sure you get the best rest, no matter the weather conditions.

Explore our full range of Down Sleeping Bags here.

KEY FEATURES OF THE BOOST 650

• Customisable Comfort: Choose between semi-rectangular or mummy bag shapes to suit your comfort.

• WarmZip™ Tech: Centre zipper design reduces internal space and boosts warmth by up to 10F/6C.

• Multi-Use Arm Holes: Easily access the WarmZip, read, play cards, or ventilate while staying snug.

• Plush & Puffy: 650-fill RDS-certified hydrophobic down with Zoned Insulation for maximum warmth and cosiness.

• Eco-Conscious Materials: Made with GRS-certified 100% recycled nylon, coated with PFAS-free water repellent.

• Inclusive Sizing: Available in Small, Regular, Long, and Wide sizes for a tailored fit.

• Additional Features: YKK anti-snag zippers, cinchable hood, draft tube, puffed draft collar, and two-way entry zipper.

Sleeping Bag Ratings explained here.