This sleeping bag has just about every feature you could wish for. You can unzip the arm area, the foot area, and fully unzip it to use as a blanket. You can even zip two bags together! It cinches up around the head and neck area to keep in maximum warmth. It’s also filled with goose down, allowing it to be both breathable and incredibly warm. What I’m still blown away by is the weight- it comes it at under 2 lbs and compresses down into a very small pack. This is perfect for overnight hikes where every ounce matters. I’m so excited to bring this along for cold weather camping!

Best sleeping bag ever!

Love this sleeping bag!!! It is probably the most comfortable, well insulated sleeping bag I've ever owned! I've attached pictures of it unrolled with no one in it, and a pic of me inside with room to spare! The hood attachment part is probably the best part in my opinion. No more cold heads when camping! Rolling it back up for storage was also super easy, which is always a plus. I would definitely recommend this to anyone camping, especially in colder climates!

Definitely worth the upgrade!

I am from Missouri where the winters aren’t too wild, but get a little lower than freezing. I’m trying to get my pack weight as low as possible while still staying warm. (I sleep cold). I needed a bag that could handle my travels out west, but also my home state. Weight is my main priority, but with the insane 950+ down I didn’t have to worry about that. The ability to unzip it entirely and use it as a blanket was a big selling point for that large temperature range. This is the more ideal spark bag in my opinion. I’m 6’3 so I ordered the long version and I can still sleep in a ball! The large is a little wider than the regular and I need that space for when I toss and turn constantly. I haven’t had a problem with the snag zippers, but I am worried when it does with ... MoreI am from Missouri where the winters aren’t too wild, but get a little lower than freezing. I’m trying to get my pack weight as low as possible while still staying warm. (I sleep cold). I needed a bag that could handle my travels out west, but also my home state. Weight is my main priority, but with the insane 950+ down I didn’t have to worry about that. The ability to unzip it entirely and use it as a blanket was a big selling point for that large temperature range. This is the more ideal spark bag in my opinion. I’m 6’3 so I ordered the long version and I can still sleep in a ball! The large is a little wider than the regular and I need that space for when I toss and turn constantly. I haven’t had a problem with the snag zippers, but I am worried when it does with the denier being so thin. I did wish it had glow and the dark zipper pulls like my old north face cats meow sleeping bag, but for a long 15 degree bag coming in at 1 pound and 14 ounces? I think I can manage

Great bag - lightweight and very warm

I took this out onto the Larapinta trail in July for a maiden voyage and it was great! Very warm and comfortable. Zipper system is a bonus. Past Outdoors had great communication and were easy to deal with. Would highly recommend if you’re looking for lightweight and something to keep you toasty.

High quality sleeping bag!

This sleeping bag is top of the line in camping equipment & sleeping bags! I was so amazed how lightweight this bag is, which makes it perfect for hiking & camping. This bag is made from high quality RDS-certified goose down with a non-PFC Ultra-Dry Down treatment wrapped in extremely breathable 10D fabrics. This is a unisex bag that can be unzipped & used for a quilt. Does have a hoodie cover for your head to keep your head warm as well in up to -9 degree Fahrenheit weather. I 1000% recommend this product for camping, especially in the cold weather!!

Light and warm

Love this bag. It weights a little over a pound and packs down super small in its stuff sack. The materials are very soft and comfortable and the zippers are excellent. So many venting options, maybe too many to figure out on the fly.

Lightweight and awesome!

Planning to go camping this October and I am so excited to use this sleeping bag. I’ve tested it out outside and it is so snug and comfy, I am happy to be able to put it to use soon. Literally can’t wait to camp using this sleeping bag

Sea to summit Spark Down zero degree sleeping bag

Best purchase ever! I bought this for the COLD fall nights backpacking in Glacier Park, and it did not disappoint. Keeps me toasty warm. I love the light weight, and it packs down fairly small. The baffles and extra down in the hood are great touches. Would 100 percent recommend this sleeping bag.

Ultralight and toasty comfort

The Sea to Summit Spark Pro Down Sleeping Bag 15F is a dream of a bag for ultralight backpacking. It packs down incredibly small, making it a great choice for long treks where every ounce counts. This high-performance bag is also comfortable and toasty, with a roomy ergonomic mummy shape that offers a good balance of warmth and wiggle room. This is an excellent choice for serious backpackers.

Wow!

This sleeping bag is the nicest one I’ve ever seen and will use! It is extremely lightweight but still able to keep you toasty warm. It unzips two different ways so you can roll down the front flap or just unzip one side. It has snaps and bungee cords you can use to help lock in warmth and make sure you are keeping out the cold. The stuffing feels thin but that also helps it to compact and easily put back in the compression bag and storage carrier. This won’t add hardly any weight if you are backpacking into your camp. The size is great for one person but there is an option to zip two bags together to share. And I love that there are accessories available to buy separately for it like a pillow and an inflatable pad. Which if you are sleeping on rocky ground, you’ll ... MoreThis sleeping bag is the nicest one I’ve ever seen and will use! It is extremely lightweight but still able to keep you toasty warm. It unzips two different ways so you can roll down the front flap or just unzip one side. It has snaps and bungee cords you can use to help lock in warmth and make sure you are keeping out the cold. The stuffing feels thin but that also helps it to compact and easily put back in the compression bag and storage carrier. This won’t add hardly any weight if you are backpacking into your camp. The size is great for one person but there is an option to zip two bags together to share. And I love that there are accessories available to buy separately for it like a pillow and an inflatable pad. Which if you are sleeping on rocky ground, you’ll probably want as this doesn’t have much “padding”. This sleeping bag is warm but breathable and for anyone who camps, this is expensive but definitely worth the quality to have.