The kid needed a sleeping bag. The kid was too small for adult bags. Adult sleeping bags were too heavy for the kid. This sleeping bag fit the kid and weight hardly nothing. Kid is happy.This bag is so small we won't get much use out of it. My son is average height for his age (9 years old) and it's already too small. This bag should be promoted for use in children aged 7 or under.My boys love it! It’s warm enough for our needs. I haven’t tested it in very cold camping weather yet. So far it’s been great!Keeps my child nice and toasty on cold nights camping. We’ve taken to the Sierra Nevada mountains in 40 degree nights and it worked great.VERY thin sleeping bag. May work for warm summer nights but that’s all.Separately I ordered for my toddler but it’s actually a big kid sizeThis sleeping bag is basically two layers of nylon/polyester with seemingly no stuffing in between. Our 9 year old was freezing and had to wear all of her long layers to make it through the night. It says it's a 40 degree bag, but I wouldn't even recommend purchasing it for inside use. Disappointing for such a well known, normally reliable brand.Perfect sleeping bag for warmer weather. Though this is listed as a kid's sleeping bag, it works great for us adults that are vertically challenged and/or quite slight in stature. Marmot makes excellent camping gear, so I have no worries that this sleeping bag will last for only a few camping trips. The material is soft and keeps in enough body heat so the sleeper is comfortable and warm even if the temp goes below the 40 degree rating. If being used on a forest, tent, or bedroom floor, it's a very good idea to use some sort of sleeping bad as this back is not one that provides a abundance of cushioning.Rather than using a tent, when we go camping we use hammocks. Typical rectangular sleeping bags aren't the easiest to deal with in a hammock due to their shape. Mummy bags like this are perfect, though. No extra sleeping bag getting bunched up in the foot area. There is enough room to lie flat on your back and turn over at night, though if you or your child are someone that likes to spread out when sleeping, you may find this style of bag too restricting.The only downside for me with this bag is that your feet are pretty constricted. There's not a lot of room at the foot end of the sleeping bag to move your feet, nor is there a little zipper that would allow you to stick your feet out while the rest of you is snugly zipped into the bag. I'm a big fan of being able to move my feet around at night or to sleep with one (or both) outside of the covers, so this took a little getting used to by me.Even for a child's sleeping bag, this one is pretty expensive. Luckily you DO get what you pay for - high quality material and craftsmanship. Under normal use this sleeping bag will last for years and can be passed down from one child to the next.Overall we like this sleeping bag, but buyers should be aware of what they're paying for. This bag is almost 2x more expensive than a Coleman child's sleeping bag which we purchased the same week we tested this bag. So what are you getting for the extra money?Number one, this bag is light and compact. This makes it a lot easier for the child to carry the bag around. This makes packing the bag in the car or backpack a lot easier. Compactness is something you typically pay more for in a lot of sleeping bags. Some of the biggest and heaviest bags you find for adults are in fact some of the cheapest you'll find on the market. Reason being the material used for insulation is cheap and not that efficient.Two, you're paying for the Marmot brand name and some extra quality. We found the Coleman bag we bought to be well made. That said, the Marmot can likely take more of a beating and will last a little bit longer. Some of this, however, is just paying extra for the brand.If you're looking for a compact bag for a child this is a great choice. If you're on a tight budget and don't care that the sleeping bag is bulky and doesn't compress that much then you might want to consider something cheaper. If cost isn't an issue you can't go wrong with the Marmot brand name.Excellent quality, packs super light. My 9 year old was very warm on our recent back country canoe trip when the temp dipped to around freezing overnight and didn’t want to climb out and get out of the tent in the morning!