KELTY

Kelty Supernova 40°F – Lightweight Convertible Down Sleeping Bag (Unisex)

SKU: KY-2171 Category: Winter Camping

Size: Regular

Long

Available in variations

RRP: ~~220,00 €~~

154,00 €

incl. 19% VAT , Free shipping

Old price: 220,00 €

This item has variations. Please select the requested variation.

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Roomy & convertible down bag for warm-weather trips – ISO tested & ultra-soft

From solo camping to cozy pair-ups, the Supernova 40°F offers all the warmth of 550 fill down with a shape that lets you move. ISO rated, fully recycled, and convertible into a blanket or double bag—it’s made for how you actually sleep.

✅ 550 fill down insulation, RDS-certified & PFAS-free

✅ ISO comfort 40°F / limit 32°F – perfect for summer, cabins & vanlife

✅ Semi-rectangular shape with extra room for all sleep positions

✅ Right-side zipper · opens flat · zip together with another Supernova

✅ Recycled 20D nylon shell, soft 50D polyester liner, internal stash pocket

✅ Packed size: 13 × 7 in · Weight: 2.1 lb (Reg) / 2.31 lb (Long)

✅ Two sizes available:
Regular: fits to 6 ft / 183 cm
Long: fits to 6'6" / 198 cm

Icon - Sleeping bag with 550DEG down filling Icon for sleep bag compatibility Icon sleeping bag with extra wide shoulder area Icon sleeping bag made from recycled materials

Kelty Supernova 40°F – Lightweight Convertible Down Sleeping Bag (Unisex)

Description

Productinformation in detail

Key Features

Materials & Care

Sizing

Reviews

Description

Productinformation in detail

Key Features

Materials & Care

Sizing

Reviews

Roomy & convertible down bag for warm-weather trips – ISO tested & ultra-soft

✅ 550 fill down insulation, RDS-certified & PFAS-free

✅ ISO comfort 40°F / limit 32°F – perfect for summer, cabins & vanlife

✅ Semi-rectangular shape with extra room for all sleep positions

✅ Right-side zipper · opens flat · zip together with another Supernova

✅ Recycled 20D nylon shell, soft 50D polyester liner, internal stash pocket

✅ Packed size: 13 × 7 in · Weight: 2.1 lb (Reg) / 2.31 lb (Long)

✅ Two sizes available:
Regular: fits to 6 ft / 183 cm
Long: fits to 6'6" / 198 cm

Icon - Sleeping bag with 550DEG down filling Icon for sleep bag compatibility Icon sleeping bag with extra wide shoulder area Icon sleeping bag made from recycled materials

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Extra room, real down, and full comfort – a bag that’s made to move

Not everyone sleeps like a mummy—and the Supernova 40°F proves you don’t have to. With its semi-rectangular shape, cozy 550 fill down, and convertible design, this sleeping bag offers unmatched comfort and flexibility for warm-weather nights. Whether you’re star-gazing solo or zipping up together, this bag is built for comfort you can count on.

—

Designed for comfort, not confinement

With an ISO comfort rating of 40°F (4 °C), the Supernova is ideal for summer trips, cabin stays, and mild overnighters in the backcountry. The 550 fill power down offers excellent warmth-to-weight ratio, while the recycled shell and liner fabrics deliver a soft, breathable feel against your skin. A contoured hood and internal stash pocket round out the details you’ll actually use.

—

Zip together or spread out

Need more flexibility? The Supernova opens flat for use as a blanket—or can be zipped together with a second Supernova to create a roomy double bag. The full-length right-side zipper features dual sliders, anti-snag protection, and a full draft tube for when temps drop. Add in the wider cut through the hips and feet, and this bag is a dream for side sleepers and active dreamers alike.

—

Our take – Supernova 40°F at Campanions

This is the bag we’d bring for warm-weather touring with a partner, or solo trips where comfort is the priority. It’s compact, soft, functional, and lets you sleep how you want—not how the bag decides. Big thumbs up for those who feel cramped in traditional mummy bags.

Item information	Value
Color:	green
Shipping weight:	0,96 kg
Item weight:	0,96 kg

✅ 550 fill down with ISO comfort at 40°F / 4 °C
Light, packable, and certified warm – perfect for summer and mild shoulder seasons.

✅ Roomy semi-rectangular shape
Extra width at shoulders, hips & feet – great for side, back or combo sleepers.

✅ Zips together with a second bag or opens flat as a blanket
Convertible design gives you true flexibility on the trail or at the campsite.

✅ Recycled 20D nylon shell & 50D polyester liner – PFAS-free
Soft feel inside and out with eco-conscious construction.

✅ Right-side zipper with dual sliders & draft tube
Easy to vent or seal in heat – no snagging, no cold spots.

✅ Packs down to 13 × 7 in
Weight: 2.1 lb (Reg) / 2.31 lb (Long) – stuff sack included + stash pocket inside

Area	Details
Shell Fabric	Recycled 20D nylon taffeta, PFAS-free DWR
Liner Fabric	Recycled 50D polyester taffeta – soft & quick-drying
Insulation	550 fill down, RDS-certified
Fill Weight	Reg: 14.5 oz · Long: 15.9 oz
Total Weight	Reg: 2.1 lb · Long: 2.31 lb
Packed Size	Approx. 13 × 7 in (32 × 18 cm)
Construction	Semi-rectangular, internal stash pocket, convertible, zip-together
Zipper	Right-side · Dual sliders · Draft tube · Anti-snag
Included	Compression stuff sack

Care Instructions

Hand wash or machine wash cold on gentle cycle
Use down-specific detergent – no fabric softeners
Do not spin or wring
Air dry flat, shake regularly to restore loft
Store loosely when not in use – avoid long-term compression
Do not bleach or dry clean

Fit & Sizing – Kelty Supernova 40°F

Size	Max. Height	Bag Length	Shoulder Girth	Weight	Packed Size
Reg	up to 6 ft / 183 cm	75 in	66 in	2.1 lb	13 × 7 in
Long	up to 6'6" / 198 cm	81 in	68 in	2.31 lb	13 × 7 in

💬 Campanions Tip:

Regular fits best if you're under 6 ft (183 cm) and prefer a closer thermal fit with just enough room to move.
Long is ideal if you're taller, roll around at night, or want to sleep with layers inside the bag.

The semi-rectangular cut gives you more space without compromising warmth—perfect for side sleepers and active dreamers.

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