--- title: "Review: Cumulus X-Lite 300 sleeping bag" description: "The X-Lite 300 sleeping bag is really tiny once packed, but unpacked it puffs up beautifully (gains loft). With its weight it ranks among the lightest three-season sleeping bags in the world." canonical_url: "https://gramino.com/blog/review-cumulus-x-lite-300" last_updated: "2022-06-05" --- # Review: Cumulus X-Lite 300 sleeping bag Authors: Michaela Hrdá Date: 2022-06-05 The X-Lite 300 sleeping bag is really tiny once packed, but unpacked it puffs up beautifully (gains loft). With its weight it ranks among the lightest three-season sleeping bags in the world. Since I'm not exactly the hotel type and spend roughly five months a year on the road, a sleeping bag is a big part of my home. I don't obsess over every single gram, but 100 grams is definitely worth caring about. Switching sleeping bags saved me more than half a kilo in this case, and believe it or not, you really feel it on your back. When my new **Cumulus, weighing just 465 grams,** arrived, I had to get acquainted with it (cuddle it, really) right away, because I hadn't held anything that soft in a long time. From the very first “puff” it was clear it would also be lovely and warm. So I started calling it my soft-and-warm bag. **The fabric used for this sleeping bag is genuinely incredibly pleasant, very light, but still fairly tough.** At first glance, though, it looked pretty prone to abrasion. “How on earth am I going to sleep in this with my dogs?” was one of my first worries, afraid their claws would tear the delicate fabric right away. (Yes, I really am capable of squeezing both my medium-sized girls into the sleeping bag with me.) But I think my worries were unfounded. Even when the fabric once got caught in the zipper and I was sure a gentle tug would rip it, it didn't. The sleeping bag is really tiny once packed, but unpacked it puffs up beautifully (gains loft). **By weight, it's among the lightest three-season sleeping bags in the world, and even most** [**quilts**](/c/sleep/quilts) **can't compete with it once you compare their temperature and weight specs.** [**Cumulus X-Lite 300**](/p/cumulus-x-lite-300) **has a comfort rating of 2 °C, a limit of -4 °C, and an extreme of -20 °C.** I spent 14 days with it in the Azores, where nighttime temperatures hovered around 10 °C, so I was nowhere near testing its limits. It got really windy a few times, and under an open tarp I worried a bit that the wind would get through, but again, needlessly. I only got too warm in it once, and simply unzipping it a bit easily fixed the sweating. **What I really appreciated about the Cumulus compared to my older Viking from** [**Warmpeace**](/b/warmpeace) **is its hood.** It stayed put on my head all night, so I woke up in exactly the position I fell asleep in. That meant I didn't have to fumble around looking for the zipper, which made mornings a lot easier. (We all know that morning ritual of putting off climbing out of the sleeping bag. The last thing you want when you're already running late is to not be able to find the zipper – and with the Viking, that's pretty much a given.) **All this makes the Cumulus X-Lite 300 a genuinely ideal three-season companion.** Unfortunately, not for me. I would have been absolutely thrilled with it **if it were just a bit wider.** Right after the second night, I added “narrow” to its “soft and warm” nicknames. My body has a quirk: **because of arthritis in my hips, my legs need to stay in a stabilized position overnight (I sleep on my stomach with one leg bent).** If they don't, I'm in pain. That's bearable for a short trip. But I can't imagine doing a multi-week long-distance trek in it. I never had this problem with [the Viking 600](/p/warmpeace-viking-600), which I'd used for everything outside of winter up to that point. The X-Lite has a noticeably more mummy-shaped cut, with a bigger difference between foot width and shoulder width. The Viking measures about 50 cm at the feet and 60 cm at the hips, while the X-Lite is 40 cm at the feet and 50 cm at the hips. **So if you need more room like I do, the Viking or a quilt is probably your best bet, or you could also consider the** [**Patizon D 290**](/p/patizon-d-290)**.** I'm genuinely happy with the Viking 600 for three-season use – I think it strikes a sensible balance of price, weight (1,050 g at 170 cm), and quality. Nonetheless, my search for the ideal, lighter summer sleeping bag isn't over yet. **If you don't mind a narrower bag, though,** [**Cumulus X-Lite 300**](/p/cumulus-x-lite-300) **could be exactly the right choice. It's a genuinely amazing sleeping bag that won't weigh you down or take up space in your pack.** This post is also available as [HTML](/blog/review-cumulus-x-lite-300). ## Sitemap See the full [sitemap](/sitemap.md) for all pages.