The Spark -18C Down sleeping bag is ideal for a sleeping bag that can also be unpacked in winter. The 850cuin down combined with the mummy cut creates an efficient thermal performance. Despite its thick and functional insulation, the sleeping bag is comparatively light at 1113g at 185cm. The RDS-certified down is treated to be pfc-free and offers excellent warmth even when damp. The comfort of the sleeping bag is extremely high, the double thermal collar and hood provide a comfortable, cozy feeling. The 10D polyamide outer and inner material is extremely robust, so the sleeping bag is durable with a lot of use and especially when sleeping outdoors and you can experience plenty of adventures with it.
The Spark -18C Down sleeping bag is ideal for a sleeping bag that can also be unpacked in winter. The 850cuin down combined with the mummy cut creates an efficient thermal performance. Despite its thick and functional insulation, the sleeping bag is comparatively light at 1113g at 185cm. The RDS-certified down is treated to be pfc-free and offers excellent warmth even when damp. The comfort of the sleeping bag is extremely high, the double thermal collar and hood provide a comfortable, cozy feeling. The 10D polyamide outer and inner material is extremely robust, so the sleeping bag is durable with a lot of use and especially when sleeping outdoors and you can experience plenty of adventures with it.
in 51 offers
The lowest price for Sea to Summit Spark -18C Down Sleeping Bag Regular right now is $599.99 at eBay.com.au, compared across 24 retailers.
The all-time low was $499.99 on 2 Aug 2026 — today's price is 20% above the lowest ever. That's a little above the best price we've seen.
Sea to Summit Spark -18C Down Sleeping Bag Regular
The Spark -18C Down sleeping bag is ideal for a sleeping bag that can also be unpacked in winter. The 850cuin down combined with the mummy cut creates an efficient thermal performance. Despite its thick and functional insulation, the sleeping bag is comparatively light at 1113g at 185cm. The RDS-certified down is treated to be pfc-free and offers excellent warmth even when damp. The comfort of the sleeping bag is extremely high, the double thermal collar and hood provide a comfortable, cozy feeling. The 10D polyamide outer and inner material is extremely robust, so the sleeping bag is durable with a lot of use and especially when sleeping outdoors and you can experience plenty of adventures with it.
The Spark -18C Down sleeping bag is ideal for a sleeping bag that can also be unpacked in winter. The 850cuin down combined with the mummy cut creates an efficient thermal performance. Despite its thick and functional insulation, the sleeping bag is comparatively light at 1113g at 185cm. The RDS-certified down is treated to be pfc-free and offers excellent warmth even when damp. The comfort of the sleeping bag is extremely high, the double thermal collar and hood provide a comfortable, cozy feeling. The 10D polyamide outer and inner material is extremely robust, so the sleeping bag is durable with a lot of use and especially when sleeping outdoors and you can experience plenty of adventures with it.
Prices last updated 2 Nov 2026.
Last updated at 02/11/2026 11:40:25
Sea To Summit Spark Down Sleeping Bag
Delivery $17
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Delivery between 8–11 Nov $29
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Delivery between 6–16 Nov $9.95
Sea To Summit Spark Down Sleeping Bag -18C Regular
Free delivery between 6–9 Nov
| Brand | Sea to Summit |
| Shape | Mummy |
| Department | Women's |
| Long | Yes |
| Water Resistant | Yes |
Sea To Summit Spark Down Sleeping Bag
Delivery $17
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Sea To Summit Spark Down Sleeping Bag -1C/30F Regular
Free delivery
Spark Down Sleeping Bag
Sea to Summit Spark Ultralight Down Sleeping Bag
Free delivery between 11–13 Nov
Sea to Summit Spark Ultralight Down Sleeping Bag
Delivery between 8–11 Nov $29
| Brand | Sea to Summit |
| Shape | Mummy |
| Department | Women's |
| Long | Yes |
| Water Resistant | Yes |