The Sea to Summit Spark SPII is an ultralight sleeping bag that is perfect for light backpacking or hiking adventures, overnights, and biking touring in warm weather. Featuring 850+ loft goose down insulation, a micro-weight 10D shell and 15D lining, it's one of the best warmth-for-weight minimalist sleeping bags available. The combination of its of size, weight and warmth make it an excellent summer sleeping bag and it can also be used as a booster bag, slipping inside another sleeping bag to add warmth.

• 10D UL Nylon fabric shell
•  15D nylon soft touch lining
• 850+ fill Ultra-Dry Goose Down insulation, which is treated to repel moisture
• Ultra-Dry Down retains 60% more loft and absorbs 30% less moisture than untreated down
• Contoured mummy shape with a full hood
• Will keep you warm in temperatures down to 35°F
• 10D UL nylon shell treated with DWR and a 15D nylon soft touch liner for lightweight durability
• 1/3 length YKK zipper maximizes warmth and minimizes weight
• Lightweight Ultra-Sil compression sack and storage bag included
• Temperature rating:  35° F
• User height: 6 ft.
• Shoulder girth: 57 in.
• Hip girth: 50 in.
• Foot girth: 37 in.
• Fill weight: 9.9 oz.
• Product weight: 16.4 oz.
• Stuff sack size: 5 in x 10 in (uncompressed)
• Spot clean
• Imported