The Therm-a-Rest Boost 650 32°F/0°C Regular in Meadow Green is a versatile down sleeping bag engineered for three-season backpacking and camping. The "R" configuration represents the Regular length, making it a precise fit for individuals up to 6 feet tall (183 cm).

Unique Performance Highlights

• WarmZip Customizable Shape:
  Built with a center zipper system that alters the footprint of the bag.
  • Left open: Functions as a spacious semi-rectangular bag, offering maximum room for turning or side sleeping.
  • Zipped up: Cinches the down tightly around your body, forming a thermally efficient mummy shape and boosting the warmth rating by up to 10°F / 6°C.
• Multi-Use Arm Holes:
  Dual-zippered arm slots let you:
  • Reach out to read a book, manage your tent gear, or cook coffee without releasing trapped body heat.
  • Use them as direct ventilation panels on warmer nights.
• Zoned Insulation Design:
  • 650-fill-power duck down treated with a PFAS-free hydrophobic coating resists unexpected tent moisture and retains loft.
  • Strategically mapped insulation focuses on the top and around your core for optimal heat retention, reducing bulk beneath you.

Specifications at a Glance

• Temperature Rating:
  • 32°F / 0°C Limit
  • Comfort rating optimized for 41°F / 5°C
• Sizing & Weight (Regular):
  • Fits individuals up to 6'0" (183 cm)
  • Lightweight at 2 lbs. 2 oz. (952 grams)
• Materials:
  • Supple 20D ripstop nylon shell and interior lining made from 100% recycled fabrics
  • Finished with a water-resistant DWR coating
• Hardware & Fit:
  • Smooth, anti-snag YKK zippers
  • Integrated neck draft collar
  • Cinchable hood

This sleeping bag is an excellent choice for adventurers seeking a balance of comfort, functionality, and performance for their outdoor endeavors.