Description

The Spark Ultralight Mummy Sleeping Bag Series is built for every kind of adventure—from lightweight liners for summer getaways to warm, packable bags that’ll see you through chilly winter nights. Designed with premium materials and a fuss-free focus on performance, these bags keep things simple without skimping on quality.

Ultralight doesn’t mean cramped; the Spark’s snug mummy shape is designed to keep the heat in, but still gives you enough room to move comfortably after a long day on the trail. Ideal for fast-moving, backcountry explorers who don’t want to carry a gram more than they need.

850+ FILL Power, RDS-certified
Goose Down with Ultra Dry Down treatment for improved water resistance in damp conditions
10-Denier Nylon shell and lining
10-Denier Nylon waterproof-breathable hood and footbox
Mummy Fit: Fitted cut with generous footbox and technical hood, to maximise thermal efficiency and minimise bulk and weight
Spark 7C/45F & 1C/30F Primary zip - 1/2 length #5 with zip-plow and two sliders
Spark -9C/15F & -18C/0F Primary zip - 3/4 length #5 with zip-plow and two sliders
Vertical chest baffles, horizontal baffles lower half and base
SPARK 7C sewn through quilted construction throughout
SPARK -1C/30Fbox wall baffles top half of bag and sewn through quilted construction lower half. SPARK -9C & -18C box wall baffle construction throughout
Spark 7C, -1C & -9C Standard front draft collar
SPARK -18C Double draft collars
Spark 7 & -1 can't be paired
Spark -9 & -18: Pairs with Women's Sea to Summit bags
QuiltLock System integrates with StS quilts
Best Use: Ultralight Backpacking
Comes With: Ultra-Sil compression bag and storage cell
Insulation: Ultra-Dry Goose Down 850+ Loft
Material(s):10-Denier Nylon shell and lining
10-Denier Nylon waterproof-breathable hood and footbox
Shape: Mummy Fit: Fitted cut with generous footbox and technical hood
BEST USE: Ultralight adventures
PERFORMANCE: Small pack size
WEIGHT: 1113g

Delivery

Standard Delivery (£4.95)

FREE on orders over £95.00

A tracking link will be provided once your order is despatched

*Certain items such as bikes and other large items do not qualify for free delivery. In these cases the available delivery options will be shown at checkout.

Next Day Delivery (£5.95)

Order by 5pm. Delivered by Evri or DHL between 8am and 8pm Monday-Saturday, excluding Bank Holidays. Cannot be offered in the following areas, and will be attempted within 48 hours: BT (all Northern Ireland), GY, IM, JE, KW11-17, HS, PH32-35, ZE.

Certain items such as bikes do not qualify for next delivery. In these cases Next Day Delivery will not be available in the checkout.