Therm-a-Rest Parsec 32F/0C Ultralight Down Mummy Sleeping Bag Small

The Parsec 32F/0C Ultralight Down Mummy Sleeping Bag in small size is built for warmth without weight, perfect for warm to mild nights on alpine trips and shoulder seasons at lower elevations. It blends a refined shape with efficient warmth, so you can move freely while staying comfortable as temps dip or humidity rises. The bag is filled with 800-fill Nikwax Hydrophobic Down, which absorbs significantly less water and dries faster than untreated down, helping you stay cozy in damp conditions without adding unnecessary bulk.

Durable yet feathery light, the ultralight shell uses 20D GRS-certified recycled nylon, a responsible choice that keeps the weight down and the planet lighter. The anti-snag YKK zipper makes entries and exits smooth while reducing wear over time, even after repeated use in variable camp conditions. For a more stable night’s sleep, the new SynergyLink Connectors secure the bag to your sleeping pad, preventing slip and maximizing overall warmth and comfort. Strategic heat mapping concentrates down where warmth matters most, while the Toe-asis Foot Warmer pocket gently hums warmth toward cold toes when you settle in.

• 800-fill Nikwax Hydrophobic Down absorbs 90% less water and dries about 3x faster than untreated down
• PFC-free and RDS-certified down keeps you warm with reduced environmental impact
• GRS-certified 100% recycled fabrics provide a soft, durable shell without added weight
• Anti-snag YKK zipper simplifies entry and exit and resists wear
• Ultralight SynergyLink Connectors secure the bag to your pad for stable warmth
• Heat-mapped Zoned Insulation puts down where it’s most needed to maximize efficiency
• Toe-asis Foot Warmer pockets heat cold feet quickly in the ergonomic footbox
• Quilt and blanket loops offer layering options with quilts or tech blankets for extra warmth

In real-world camping scenarios, you’ll notice the balance between warmth and weight. On a clear summer night, the Parsec feels like a soft, breathable cocoon that won’t overpack your pack. During spring and fall nights at lower elevations, the down’s performance with hydrophobic properties helps maintain comfort when moisture is present, while the compact shell keeps you agile around the tent or bivouac. The bag’s refined shape supports easy movement for adjusting gear or stargazing mid-sleep, and the toe warmer helps you wake with toasty toes after a chilly evening.

Materials and sustainability

This Parsec prioritizes responsible materials without sacrificing performance. The shell uses recycled nylon and the down is hydrophobic and RDS-certified, combining lightweight durability with a lower environmental footprint. The PFC-free construction and hydrophobic down work together to reduce the impact of moisture while preserving loft for warmth across night after night of adventures.