Lightweight summer sleeping bag with CirroLoft ECO – ISO Comfort 41°F
For warm-weather nights in the van, at camp, or on a hut trip, the Cosmic Synthetic 40°F gives you what you actually need: soft, compressible warmth, recycled materials, and ISO-tested comfort without bulk. It’s light, packable, and ready for summer.
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✅ ISO rated: Comfort 41°F · Limit 32°F – perfect for summer & mild shoulder season trips
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✅ CirroLoft ECO insulation – fine-denier, 100% recycled, packs down small
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✅ Shell: recycled 20D nylon · Liner: 50D polyester · PFAS-free
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✅ Right-side zipper with full draft tube & anti-snag protection
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✅ Natural-fit footbox – more space to move and breathe
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✅ Includes compression sack – packed size ~17" × 8", weight ~2.3–2.5 lb
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✅ Available in two sizes:
Regular: up to 6 ft / 183 cm
Long: up to 6'6" / 198 cm
| Icon | Meaning | Description |
|---|---|---|
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Natural-fit Footbox | ✅ More room to wiggle your toes – for better sleep and fewer cold spots. Ideal for back and side sleepers. |
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Offset-Quilt-Construction | ✅ Offset quilt pattern prevents cold spots and keeps warmth evenly distributed through the night. |
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Inside Stash Pocket | ✅ Internal zip pocket keeps headlamp, phone or small essentials right where you need them. |
✅ ISO comfort tested at 41°F (limit 32°F)
Perfect for summer camping, van trips, or cabin overnights—light and reliable.
✅ CirroLoft™ ECO fill made from 100% recycled fibers
Soft, breathable, and thermally consistent—even when humidity rises.
✅ Recycled shell and liner fabrics with PFAS-free DWR
Buttery-soft 20D nylon exterior, smooth 50D polyester liner inside.
✅ Right-side zipper with dual sliders and full-length draft tube
Easy to vent or seal in warmth—anti-snag design for hassle-free use.
✅ Internal stash pocket + natural-fit footbox
Room for essentials and space for your toes—ideal for side sleepers.
✅ Available in Regular (6 ft) & Long (6'6")
Packs down to 17" × 8" · weighs just 2.3–2.5 lb.
