Therm-a-Rest · Sleeping Bags
The Boost 650 Sleeping Bag is designed for warmer-weather backpacking and camping. It features a WarmZip™ that adjusts the shape to add up to 10°F for colder nights. The semi-rectangular design balances comfort and thermal efficiency. It uses 650-fill RDS-certified hydrophobic down for reliable warmth and an eco-conscious shell and liner made from 100% recycled nylon. Multi-use arm holes offer ventilation, and zoned insulation optimizes heat retention. The bag includes a compression sack and storage sack for convenient packing.