Boost 650 20F / - 6C Regular Wide

 

WarmZip gives you the power to add up to 10°F/6°C to the Boost’s temperature rating. Standard Therm-a-Rest features like a puffy draft collar, a draft tube along the entry zipper line and a cinchable hood round out the Boost’s bliss-inducing comfort. We designed the Boost 650 to be comfortable when you’re falling asleep, when you’re asleep and when you’re wide awake and hanging out in your tent. The arm holes give you easy access to the WarmZip without having to use the side zipper. They also allow you to access your belongings, read a book, play cards or high-five your friends without leaving the cozy warmth of your sleeping bag.

 

Getting too warm? Use the arm holes to ventilate or comfortably sleep with just your arms out. You can also ventilate around your torso or down by your feet with the two-way side zipper. Every zipper line on the Boost has a durable Ykk anti-snag pull to eliminate annoying snags and damaging tears.

 

All that comfort must be bulky and heavy, right? Think again. The Boost 650 was built to backpack-we dialed in the materials and design to make it light, packable and high-performing in variable backcountry conditions.

 

Zoned Insulation places the 650-fill hydrophobic down in key warmth-retention areas (On top, around your core and shoulders)and reduces it where it’s less efficient (On the bottom), allowing the Boost to create more warmth with less down.

 

The shell and liner are made of 100%-recycled nylon that was handpicked for its light weight and super-soft feel. The PFAS-free DWR coating and the hydrophobic down keep the Boost warm and comfy even in wet weather.

 

• Customizable Comfort: Enjoy the spacious freedom of the semi-rectangular bag or the cozy warmth of a mummy bag-pick the shape and temperature that keeps you comfy at night with just a zip
• 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 10°F/6°C
• Multi-Use Arm Holes: Reach the WarmZip, read a book, play cards or simply ventilate-do it all while tucked into your sleeping bag for elevated livability
• Plush & Puffy: 650-fill, RDS-certified hydrophobic down is allocated to key areas with Zoned Insulation for refined heat efficiency and maximum coziness
• Eco-Conscious Materials: Shell and liner are made of GRS-certified, 100% recycled, soft-to-the-touch nylon and coated with PFAS-free water repellent
• Inclusive Sizing: Each length-Short, Regular, Long-is also available in a Wide width, so you get the bag you want in the fit you need
• Ykk anti-snag zippers, cinchable hood, zipper draft tube, puffed draft collar, and a two-way entry zipper
• Humanely Sourced Down Insulation: 650-fill hydrophobic down is certified to be sourced from humanely treated waterfowl by the Responsible Down Standard(RDS)

 

• Fill: 650 Fill Duck PFAS Free Hydrophobic Down, RDS
• Shell/Lining: 20D 100% Recycled Nylon Ripstop

 

• Length: 80in/203cm
• Fits: 72in/183cm
• Girth Shoulder: 76in/193cm
• Girth Hip: 74in/188cm
• Girth Foot box: 61in/155cm
• Packed dimension: 13.5x7.5in/34x19cm
• EN Comfort: 0°C/32°F
• EN Limit: -6°C/20°F
• EN Extreme: -23°C/-9°F
• Zipper side: Left
• Fill weight: 0.91kg/2lb
• Weight: 1.52kg/3lb 5oz

 

• Compression Sack
• Storage Sack