SKU: 99807086058

Boost 650 20F/-6C Regular

Sale price$143.97 Regular price$159.97
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

Boost 650 20F/-6C RegularComfort is not one size fits all, which is why the Boost 650 empowers you to customize its shape to find your perfect balance of space and warmth. As a spacious semi rectangular sleeping bag the Boost provides all the room you need to side sleep, shift about, spread out and relax. The semi rectangular shape gives you considerably more internal space than a mummy bag youll feel unrestricted and free to sleep in whatever position you want all night

Comfort is not ‘one size fits all’, which is why the Boost 650 empowers you to customize its shape to find your perfect balance of space and warmth. As a spacious semi-rectangular sleeping bag the Boost provides all the room you need to side sleep, shift about, spread out and relax. The semi-rectangular shape gives you considerably more internal space than a mummy bag — you’ll feel unrestricted and free to sleep in whatever position you want all night long. But more space demands more body heat to warm it up and cold isn’t comfortable. That’s where WarmZip comes in. Zipping up the WarmZip center zipper transforms the shape of the Boost 650 from a semi-rectangular bag to a thermally efficient mummy bag. It pulls the 650-fill down around your body and reduces the amount of space your body needs to heat. WarmZip gives you the power to add up to 10F/6C 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. 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.

  • Boost 650: Ultra-comfy warmer weather backpacking sleeping bag with adjustable shape and warmth
  • Customizable Comfort: Enjoy the spacious freedom of the semi-rectangular bag or the cozy warmth of a mummy bag
  • 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 
  • 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
  • Additional Features: YKK anti-snag zippers, cinchable hood, zipper draft tube, puffed draft collar, and a two-way entry zipper
  • Includes Boost 650, Compression Sack, and Storage Sack
  • Shell fabric: 20D 100% Recycled Nylon Rip Stop
  • Lining fabric: 20D 100% Recycled Nylon Rip Stop
  • Fill material: 650 Fill Duck PFAS Free Hydrophobic Down, RDS
  • Fill weight: 1.7 lb
  • EN Comfort (C): 0 C
  • EN Comfort (F): 32 F
  • EN Limit (C): -6 C
  • EN Limit (F): 20 F
  • EN Extreme (F): -9 F
  • EN Extreme (C): -23 C
  • Zipper side: Left
  • Length: 80 in
  • Fits: 72 in
  • Girth Shoulder: 64 in
  • Girth Hip: 60 in
  • Girth Foot box: 61 in
  • Packed dimension: 12.5 in x 7.5 in
  • Weight: 2 lb 11 oz

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 99807086058

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4.2 ★★★★★
Based on 8 reviews
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Verified Purchase
Ms. Claudia Adams
Alexandria, US
★★★★★ 4
Pants run small
Size: 3X-Large, Color: Purple
Jacket fit .. but pants did not. Nice suit though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2025
T
Verified Purchase
Tabatha
Massapequa, US
★★★★★ 5
Fits like a glove, looks like a million!
Size: Small, Color: Purple
Bought this as a gift for him and very impressed. Looks like a million dollars, fit true to size, looks tailored not cheap. Fabric is quality, stitching is done well and the pants have a nice hidden elastic extender that helps if he goes up or down a few pounds. Very impressed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
F
Verified Purchase
Freak77Showisnormal
Chelsea, US
★★★★★ 5
It was the perfect suit for our big day!
Size: X-Small, Color: Purple, Size: X-Small, Color: Purple
Purple size xs. He's 5'9" 145-150lbs. Very impressed with this suit. The color and pattern is awesome. The fit was good. I would say this suit runs large. Usually he wears a Medium in everything but ordered an XS and it fit very well. The pants were long we had to get those hemmed. There was a few stray strings by the end of the night in areas of the suit. But overall good quality. And for a great price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 13, 2025
M
Verified Purchase
Mabel D.
West Palm Beach, US
★★★★★ 3
We were excited and I wanted to like it but...
Size: X-Small, Color: Black, Size: X-Small, Color: Black
We ordered this for Prom and it was supposed to be a size small, which was available for Prime ordering, but had to settle for xsmall. The pants, fortunately fit well and just need to be hemmed, the vest is great and the jacket is snug. My son has broad shoulders and I was hesitant to buy the xsmall, but it does fit just right. The only thing he would need to do is unbutton the jacket while he is dancing and maybe take it off while seated and eating dinner before prom. The material is surprisingly nice and has weight to it. I was relieved it isn't flimsy. The overall look on my son is smooth and we love the pattern and the material has shine to it. I was not happy that right out of the package, the button to the jacket could potentially fall off during because it doesn't look securely sewed in. The side of the right side of the jacket has thread already coming apart. And I found a little snag in a different location. I'm really not happy about that. I posted photos so you can see what I mean. We were excited about this suit, but it's going back. The company needs to do better with quality control.
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Reviewed in the United States on May 2, 2023
J
Verified Purchase
Jarrett
Chelsea, US
★★★★★ 5
Very Nice Fit!
Size: X-Large, Color: Black
Excellent quality and perfect fit! I used thr recommended size chart and it was just right. The design pattern in the suit gives it a very nice look. I'd order from Kudoro again!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 18, 2026

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