Ultra-Lightweight Down Performance From Sea to Summit — Brand New, Brand Sample

If you're counting grams, but still count on a great night's sleep, the Spark may be the right bag for you. Filled with RDS-certified 850+ fillpower goose down treated with a non-PFAS Ultra-Dry Down treatment, the Spark is constructed with a technical hood and zipper draft tube to retain warmth. Comfort comes from a super-breathable 10 denier liner fabric, while a 10D shell with a non-PFAS DWR plus a highly water repellent hood and footbox fabric shed wind and condensation. The full-length zipper model can be zipped to an equivalent Women's Spark for comfort that couples can share

This is a brand sample procured directly from Sea to Summit, arriving in new condition with original tags. **Note: the stuff sacks says Spark Pro, but this is not the Pro model.

Size: Regular
Color: Grey
Condition: Sample - New with Original Tags, Brand Sample
Original Retail: $449

Key Features:

• RDS-certified, 850+ fillpower goose down with a non-PFAS Ultra-Dry Down treatment for maximum thermal performance
• Ultralight, breathable 10D nylon liner and a 10D shell with non-PFAS DWR keeps the hood and footbox highly water resistant
• Technical hood, anatomical footbox and an ergonomic mummy shape - ultralight doesn't have to mean ultratight
• YKK #5 zippers with zipper plough provide reliable, snag-free operation
• Baffle construction specific for each use: Sewn through for lighter weight (7°C|45°F), Hybrid box baffles in torso/sewn through in leg area (-1°C|30°F) or full box baffles for maximum warmth (-9°C|15°F)

Ideal For: This is the bag for serious backpackers, fastpackers, and alpine climbers who need a legitimate three-season bag that won't weigh them down. As a brand sample in new condition with original tags, it's never been slept in — you're getting a $449 ultralight sleeping bag at a significant discount. If weight and packability are priorities in your kit, the Sea to Summit Spark is one of the best options on the market, and this is a rare chance to get one at a pre-owned price without any of the wear.