Spark vs Ascent: Which Sea to Summit Bag Wins?

Spark vs Ascent: The Ultimate Sleeping Bag Showdown

Choosing the right sleeping bag can make or break your camping experience. In this showdown, we’re comparing two of Sea to Summit’s most popular models: the ultralight Spark and the versatile Ascent. Both are top-tier options—but which one suits your adventure style best? Watch the video to find out!

Sea to Summit Spark: the best for Ultralight Adventures

The Sea to Summit Spark is the go-to choice for hikers and bikepackers chasing minimal weight and maximum performance. Weighing as little as 350g, it's ideal for warm-weather missions and minimalist gear lists. With premium down insulation and an ultracompact design, the Spark ranks among the best sleeping bags suited to fast and light travel.

A Sleeping Bag for camping in all conditions: the Ascent

If comfort and versatility are your priorities, the Sea to Summit Ascent wins. With a roomy tapered rectangular shape, Free-Flow Zip system, and the ability to join two bags together, the Ascent is perfect for changing weather and longer trips. It’s one of the most adaptable sleeping bags for camping on the market.

Why Shop at PAST Outdoors?

At PAST Outdoors, we only stock gear we trust to perform in real-world Australian conditions. Whether you're heading off-grid or planning a relaxed weekend in the bush, our handpicked range of Sea to Summit sleeping bags and accessories is backed by expert advice and a passion for outdoor adventure. When you shop with us, you're not just buying gear—you’re joining a community that loves to explore.

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Freedom for the feet

First sizing: my feet are 25.4cm long x 10cm wide and I have a high arch. I am usually eu 40 in Birkenstocks, uk 6.5 in Dr Martens, us 8.5 in Butora Gomis. I bought a w10/m9 in the clogs, I size up. Because of the high arch, I have had to adjust it the front straps to the smallest option. I’m still working on getting the back adjustment right for my narrow heel. Overall, the length size is right and the width works, but definitely is roomy for a narrower foot. The clogs are intended to be a durable replacement for my aging Birkenstocks. They are definitely a style choice, but given their practicality I’m happy with that choice.

Seriously good sauce

This stuff is delicious. Don't take my word for it- get a bottle, you won't regret it

Quality product , fast delivery, I’m pleased.

Osprey comparison table

Well presented content. Thank you.

Bikepacking the Brisbane Valley Rail Trail in Bedrock sandals

Last year I used a pair of Bedrock Croc Sandal for my bike packing trip, this year I grabbed the new Evo C sandals. They worked really well, comfortable all day, no hot sweaty feet, I could get them wet without having to worry. I pair them with the Bedrock socks for night time. The new thicker sole was a great and provided more than enough stiffness on flat pedals. I’ll probably ride in these all summer now!

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Spark vs Ascent: Which Sea to Summit Bag Wins?

Spark vs Ascent: The Ultimate Sleeping Bag Showdown

Sea to Summit Spark: the best for Ultralight Adventures

A Sleeping Bag for camping in all conditions: the Ascent

Why Shop at PAST Outdoors?

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