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BELL

Bell Cocoon 300 Rear Mount Child Bike Seat — 5-Point Harness, Spoke Guard, Fits 26–27 in Bikes, Up to 40 lbs, Ages 1+

Based on 3,801 reviews
Condition: New
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$31.48
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Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 16
Order within 6 hours and 53 minutes

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At a glance

Condition
New
Color
Cocoon 300
Weight
16 oz
Material
Composite
Item Type Name
Child Bike Seat
Bike Type
Road Bike
In the box
Bell COCOON 300 Child Bicycle Carrier
Warranty
As Labeled

Features 5

  • SECURE 5-POINT HARNESS SYSTEM Keep your child safely buckled in with an adjustable five-point harness designed for children ages 1 and up, weighing up to 40 lbs, providing the same harness configuration trusted by premium carriers costing three times more.
  • SIMPLE RACK-MOUNT INSTALLATION Designed to fit most standard 26-inch and 27-inch adult bikes without rear suspension; the wrap-around bucket seat attaches securely to your existing rear rack with included hardware and step-by-step instructions.
  • BUILT-IN SAFETY FEATURES Molded spoke guard prevents small feet from contacting wheel spokes, while the included rear reflector enhances visibility during rides; wrap-around bucket design provides side-impact protection for added peace of mind.
  • PREMIUM FEATURES AT AN AFFORDABLE PRICE Get the essential safety features parents needfive-point harness, spoke guard, reflector, and sturdy bucket seatat a fraction of the cost of competitors priced at $180 or more.

Description

Introduce your child to the joys of healthy activity and the beauty of the great outdoors when you take them for a ride in the Bell cocoon 300 child carrier. Whether you're commuting or biking for recreation, your child can ride along with you in safety and comfort. . The high wrap- around seat back with seat pad supports and protects the occupant. . A five- point harness system securely holds the child during rides. The seat fits most 26-inch and 27-inch bikes without rear suspension. Bring your child along while riding to the grocery store or park with the Bell Classic bicycle child carrier. Designed to fit most standard adult bicycle frames, the carrier is sturdy, safe, and comfortable for your kid. The Classic includes an adjustable harness that creates a snug fit, along with a front grab bar that acts as a handhold and seatbelt. The back pad is also washable--a must for most parents. Offering a capacity of 40 pounds, the carrier sits securely over your back wheel.

Specs 15

Brand Name BELL
Global Trade Identification Number 73
Number of Items 1
Number of Packs 1
Unit Count 1 Count
Item Weight 16 ounces
Manufacturer BELL
UPC 035011005973

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 16

Yes, absolutely! This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2027.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

Good for little kids
Color: Cocoon 300
This has been a great addition to our biking family. It has been very sturdy and comfortable for the back of our bike. The installation took a little longer than expected and wasn’t super clear. So, just make sure to take your time installing it. We use it on an old trek mountain bike which could be the problem. But once on it’s great! ... show more
Reviewed in the United States on February 6, 2026 by Kelli Campbell
Great product.
Color: Cocoon 300
Review Image by Gabriela
Did not have a hard time assembling it. It took me around 30 minutes by myself. I feel like there was a missing screw to it. But I had some extras at some and I ended up using it. Overall it's sturdy, my 7 month old baby fits in well. (Even though it's not advertised for under 1 year old)
Reviewed in the United States on May 19, 2026 by Gabriela
I really like Bell products and hope they make small improvements
Color: Cocoon 300
Review Image by B
Review Image by B
The problem I find is a 45 min install takes close to 90 min when you have to figure things out. I would suggest looking at this and reduce the 25 steps to 10-15. Install the U bracket and spacer to the max distance in almost all cases this will make it easier to mount on the seat post bracket. You can use the existing bolt as long long as it tightens very well and won't come undone. I would leave the bolt loose making sure to go back and tighten with socket or adjustable cresent wrench as pliars are tough to even hold one side. Vice grips may help. The V shaped brackets that go on either wheel post have the V pointing inward to wheel. Don't put on other piece until mounting and add the vinyl clear tubes to keep grip and protect paint. Mount it as high as you can keep seat near level to avoid chain contact. The V shape will deform, but tighten well as this will cause problems if ot slides down which is why it lost a star, those paint protectors might allow it to slide and aren't well documented. Finish tightening everything pushing up down and forward and back as seat should take at very least 40lbs without moving. The bolt covers were good on side hopefully to allow easy rust free removal, but not on U bracket as this bolt had sharp edges and cut me on checking. I then used the cheap grey cover to protect feet from bracket and wheel. This part certainly could be improved. If you do this and avoid needing a screwdriver to move straps around as you accidently inserted wrong end, this should save you more than 30 minutes over the instructions path. I would suggest they change lap bar to be further back from the seat and 2 inches longer U bracket with two bolts to help many people I saw had to modify. I'm very happy with Bell products and as easy as the middle/front mount version took installing the mount on the backside of the middle post to fit her safely behind the handle bars of a small 26" bike. That one looks easy but takes a lot longer than it should. This one was easier because it fit better on this same beach cruiser. ... show more
Reviewed in the United States on July 17, 2024 by B
Child bicycle carrier
Color: Cocoon 300
Good quality and price
Reviewed in the United States on August 19, 2026 by Charles B Thompson
Basic Seat for Limited Bikes
Color: Cocoon 300
The seat would not fit on my Cannondale F300 ([...] There are three main issues: 1. The seat stays (diagonal frame members from axle to base of seat) are too thick for the clamps to go around. 2. Even if the seat stays were thinner, the rear derailleur cable runs down the right side seat stay and the clamps would interfere with it. 3. To mount to the seat tube, I would have had to remove my quick release seat bolt and replace it with the included bolt. However, the bolt included was too thick to fit in the seat clamp and the quick release did not have enough extra length to attach this seat. With all this said, I ended up installing it on my wife's bike, a vintage Schwinn women's frame bike. It fits fine on this bike with no issues. The bike has thin seat stays, a seat post clamp with a large enough hole and no derailleur or other cabling to get in the way. The foot guards are very cheaply made and the attachment ties included are worthless. I ended up attaching the guard with zip ties. Altogether, an inexpensive seat that will suffice on older bikes. For my bike, I ended up ordering the CoPilot Taxi CoPilot Taxi Bicycle Child Seat, which mounts to the built in rack mounts on my frame. ... show more
Reviewed in the United States on April 15, 2011 by Jamey
Fun Way for small kids to Biking Adventure
Color: Cocoon 300
I recently started using the Bell COCOON 300 Child Bicycle Carrier, and it has quickly become a favorite in our family, especially during the fall season. First off, the sturdiness of this carrier is impressive. It feels incredibly well-built, providing peace of mind knowing that my child is secure while we ride. The installation was straightforward, and it fits seamlessly on my bike. The adjustable straps and harness ensure a snug and safe fit for my little one, which is always a top priority. What really stands out is how much my kids love it! They enjoy the view and the feeling of being part of the adventure as we cruise through the colorful fall foliage. The padded seat adds extra comfort for longer rides, and the added safety features make every outing enjoyable for both of us. Overall, it’s a sturdy, reliable, and fun way to include my child in our biking adventure, and I highly recommend this carrier for any family looking to enjoy the outdoors together. ... show more
Reviewed in the United States on October 17, 2024 by Jess
TERRIBLE! I would have been sitting on my child.
Color: Cocoon 300
This was a terrible purchase. The plastic of the seat is so cheaply made, I would not feel safe leaving my child in it. It was flimsy, and felt like paper. Though I suppose that makes it light weight for riding ease, I was not comfortable with it. Needless to say, I still attempted and took it to a Bike Shop for installation. Even the bike mechanics thought this was a terrible product (and NO they did NOT try to sell me a different one - they just told me to get rid of this one altogether). Let me start by saying what the biggest problem is. The seat has no extending hardware, which means it only reaches as far as the small connector piece can reach. The picture sort of shows this, but not nearly to the extent it actually sits. This child seat was right up against the back of my seat. I ride a beach cruiser, and after lots of online research, found this to be a beach cruiser compatible child seat. WRONG! This chair was up against my chair, and the child handlebar was actually sitting ON my bike seat. If I tried to sit down, I sat on the child handlebar. That isn't even the worst of it. My child, who is 2 years old and 25 lbs, could not even comfortably get into the chair. We had to take some serious time to get him into it, because my bike seat was completely in his way. When he was finally sitting in it, his little legs were almost doing splits to fit around my adult seat. AND they did not even get around the seat entirely. So had I got on my bike, I would have been sitting on the handlebar AND my son's legs. And he is a little guy. I realize most of these chairs are close to the adult seat, but this was ridiculous. Also, many other chair types come with an extending piece of hardware that place the chair further back. Though I am not nearly the size of this woman in the photo, this is what I envisioned for my poor child if I actually used this product: [...] (see the link or google "fat lady child carrier"). And take a close look, that seat in the photo IS the Bell Classic Child Carrier. I wish I had seen this photo before I bought it. Then there is another safety issue. The wheel guard is terrible. It is a flimsy, cheap piece of plastic, which looks much like a piece of paper, and it basically attaches with twist ties over the tire. This is to keep the child's feet from getting stuck in the wheel, so it is very important to be safe and sturdy, which this IS NOT. I am so disappointed in this seat and have already issued a request to return it. ... show more
Reviewed in the United States on March 31, 2014 by AbsoluteMom
Simple and Secure!
Color: Cocoon 300
Review Image by Bryce Roper
Love, love, love this bike carrier seat. It's simple to install, doesn't weigh down when I'm riding, and they feel secure in it! I like the lap guard and how it cradles them in. I got this for my daughter when she was one, and she still fits comfortably in it two years later. I am about to buy a second one for my son so my husband can take him on rides with us too. ... show more
Reviewed in the United States on January 24, 2026 by Bryce Roper
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