On the Move Sleep Bag: Silver Moons - Size M


On the Move Sleep Bag
Silver Moons - Size M


Size M: 6 - 18 Months / 15 - 18 lbs.

Switch seamlessly from naptime to playtime with the Silver Moons On the Move Sleep Bag. Tuck away feet for sleep, then effortlessly convert to a walker bag for lounging, playing, and toddling around.

  • Convertible feet holes to switch from sleep to play (and back!)
  • No-fuss, 2-way zipper makes diaper changes a snap
  • Modify length to prevent trips and grow with baby
  • Travel-friendly seatbelt slot for strollers and car seats
  • TOG 0.5
  • Ultra soft and breathable 100% cotton
clock icon Machine Washable

From Play to Sleep in a Snap

Ease of Use
swaddle diaper
Easy Diaper Change
cotton swaddler
Breathable Cotton
100% cotton
100% Cotton


On the Move Sleep Bag: Silver Moons - Size M is rated 4.5 out of 5 by 92.
Rated 5 out of 5 by from Quality Product, Engineered Very Well This sleep sack is honestly pretty great. The fabric is light and super soft, with a tight knit that seems like it will hold up to washings and wear well. It is 0.5 tog, so light enough it could be used on its own or with just a onesie in the summer, and great for layering without overheating baby in the winter months. They really did think of everything when they engineered this sleep sack. The snaps on the shoulder make it super easy to get into and out of. The two-way zipper, as any parent knows, is clutch for baby sleep clothes because diaper changes. And my favorite part is the convertible bottom. I've not seen another sleep sack where you can choose to allow baby to put their feet out so they can stand or walk or just cool off their feet! Even if you never opened the feet holes, it is still nice to have that option. Another great thing about this sleep sack is that it allows you to use it in a stroller or car seat, since there is also a little slot for the seat belt. I've also not seen another sleep sack where this was a feature. Overall great product with a very thoughtful design. Note: I was given this Sleep Bag to try as part of the weeSpring Parent Panel. However, I have personally used and objectively reviewed this product. All opinions are my own.
Date published: 2018-10-04
Rated 5 out of 5 by from super soft sleep sack As a mom of three under three, I am always looking for anything and everything that will help the kids (and consequently the parents!) get a good night of sleep! We have tried several brands of sleep sacks before, and was lucky that I was able to try this Sleep Bag as part of the weeSpring Parent Panel. One of the promoted features of the sleep bag is the ability to wear during sleep and play by using the sleep holes - although I was able to easily convert the bag and utilize the foot holes, I did not use this feature often. The bi-directional zippers and the easily adjustable shoulder snaps made it easy to take the sleep bag on and off. My twins spit up a lot so it was better for me if they spit up on their outfit rather than the sleep bag. We loved the softness and thickness of the material - babies were not too hot, not too cold. Lastly, I appreciated the fabric covering the zipper to prevent scratching of babies chin.
Date published: 2018-09-30
Rated 5 out of 5 by from Super Soft and breathable! Ever since my son was a newborn he absolutely hated being swaddled or covered with a blanket. He has always liked having his arms and legs free and being able to move around. During the winter seasons, I would bundle my son up with attempted swaddles, long sleeves, socks and sweatpants. However, I was always worried that he would unravel his swaddle or overheat from all the layering of clothing. I finally decided to try a baby sleeping sack with long sleeves and it worked out for about a month or so. After the winter months passed, I was no longer able to use the sleeping sack because the material was way too hot and my son would wake up during the middle of the night screaming! I knew it was the sleeping pouch that was overheating him because as soon as I unzipped the sleeping sack and removed him from the pouch he would go to sleep again. I live in Southern California, it's not super cold but during the night there is a breeze and it can get a little chilly so I worried that my son would be cold. After getting rid of the baby sack, I was attempting to swaddle my baby without tucking in his arms but he would eventually unravel the swaddle and tuck his legs into his belly. Thankfully, The weeSpring Parent Panel sent me the On The Move Sleep Bag from Ergobaby to try out and review with my son. This sleeping bag is absolutely amazing because it allows my son to have his legs and arms out without feeling constricted. This particular sleeping bag also grows with your child, it has adjustable clips that allows you to make the arm and leg spaces bigger so that your child is comfortable and doesn't fall down while playing. For my family, the most important aspect of this sleeping bag is the fact that it allows my son to be able to move (he can literally crawl and stand) all while wearing the sleeping sack. Another great thing is the 100% premium cotton that the bag is made off; its super soft, warm but not overbearing and it washes well (no shrinkage and remains soft). It's also a breeze to be able to change my son's diaper quickly with the two way zipper and a major plus that it has a slot for the stroller and car seat belt! Overall, this sleeping bag is amazing because I have peace of mind, my son is able to move freely, and diaper changing is super fast!
Date published: 2018-09-28
Rated 5 out of 5 by from Perfect for my on the move baby! This sleep bag is just what we needed as the temperatures start to cool -- it is almost like it was made with my daughter in mind! The very first thing I loved about this bag is the amazing softness of the cotton. Natural fabrications are important to me for light, breathable comfort. Secondly, my daughter does NOT like having blankets on top of her when she sleeps. We co-sleep, and if I cover her up at night, she will wake up angry, kicking them off of her -- it is a constant battle to keep her warm. She also refuses to wear socks, which means keeping her cozy as the nights get cooler is tough. Enter the On The Move Sleep Bag! I can put this sleep bag over her pajamas before bed, pop her feet through the holes, and she runs around playing peek-a-boo with her big brother without any restrictions until it is time to go to sleep. Once she is ready for bed, I don't have to worry about getting the sleep bag on her because she is already dressed for the night. When she falls asleep, I am able to pull her feet through the leg holes and snap them shut, so I know she is staying warm in the night with the extra layer -- this part is especially great and my favorite feature, because I can leave one foot out, which seems to keep her feeling unrestricted in her sleep. Middle of the night diaper changes are super easy with the two-way zipper; I know she is staying warm and cozy since I don't have to completely remove the sleep sack. Thank you to weeSpring Parent Panel for sending me this sleep bag to try and review!
Date published: 2018-09-26
Rated 5 out of 5 by from Convenience & Quality Ah, a child sleeping soundly. There's nothing quite like it, am I right? You want to make them as comfortable as possible so that they (and you) can get some good quality zzzzzz. You want them warm and cozy but don't want a blanket that can come off or pose a safety hazard. That's where the Ergobaby On the Move Sleep Bag comes in. Let me just say that I have loved every single item I've had of Ergobaby and this is no different. First of all, the fabric is amazing. It is so soft yet obviously sturdy enough to stand up to many washings and wearings. The ease of putting it on and taking it off is great and the quick access for diaper changes is outstanding. Even with how easy it is to remove, I like how you are able to leave it on for play time and use in the car seat and/or stroller. I personally did not use it in the car seat/stroller, but I love that it's an option and can definitely see the benefit. Converting it from a sleep bag to play time was a snap... literally, you just unsnap the feet holes, put their feet through, and voila! Thank you to the weeSpring Parent Panel for giving me the opportunity to try it in exchange for my honest review.
Date published: 2018-09-26
Rated 5 out of 5 by from Best sleeper! I've tried so many different sleepers it isn't funny and I was skeptical that the on the move one would be any different, but boy was I wrong! First off its name perfectly fits my 8 month old who is always on the go so traditional sleepers just don't work for him but he needs that protection at night because our house gets cold so I felt this sleeper did a great job at meeting all of our needs, plus it is just so adorable! I loved the ease of going from sleeper to something they can crawl around in, it was very easy to do! I find myself leaving my son in it for longer periods during the day and I foresee that continuing as it gets colder. Well made and innovative this is really an outstanding product. I received this item from weesprings parent panel in exchange for my honest opinion.
Date published: 2018-09-26
Rated 5 out of 5 by from Great sleep bag! I really enjoyed the Ergobaby On the Move Sleep Bag, and so does my 8-month-old baby! He sleeps better when he has a sleep sack, but it's been difficult to find ones that work for him as he has gotten more mobile. He loves having his feet out, and I love how soft the fabric is. He even can wear it in his stroller. Win-win! I received this product weeSpring Parent Panel to review.
Date published: 2018-09-25
Rated 5 out of 5 by from Love love LOVE! I have been INCREDIBLY skeptical about wearable blankets for a while now... what if my kid freaks out because her hands or feet are confined?! (Her feet are her BEST FRIENDS). Enter this product.... When I was offered to test this product out from the weeSpring Parent Panel, I jumped at it. It seemed perfect on paper: feet out, hands out, awesome zipper, parachute pants feel. WINNER!!... on paper so far. Needless to say, it was a winner at home too! She sweats in her sleep and this is thin enough to not make her overheat but also a great fabric that keeps her warm. Very soft, very practical, and perfectly perfect for the little one. I love that the zipper zips from the bottom for diaper changes... that the feet can be in or out in a snap (literally!)... and also it is lightweight and not as binding or restricting on the little one as others have proven to be. I don’t think she will ever keep this on to play in.... I like to have a nightly and somewhat of a daily routine. I keep night blankets, clothes, etc separate from her play zone... including his blanket. Would I recommend it? Absolutely... I’m buying one for a babyshower gift this week for a very close friend. I wouldn’t do that if the product wasn’t everything I said, and then 20x’s better.
Date published: 2018-09-25
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Instructional Videos

Ergobaby On The Move Sleepbag - Harness Use
Ergobaby On The Move Sleepbag - Sleep Mode
Ergobaby On The Move Sleepbag - Walk Mode