EBike Battery Cover, (11.8-15.8in circumference) Reflective Battery Protective E-Bike at Night, Bicycle Thermal Cover Waterproof Dustproof Bag

This wrap fits over my bike frame and battery as well as just the battery alone. The Velcro is almost endless on where it attaches to itself. On my Aventon Pace 500.3, it’s almost a little too large but wrapping it tight, it works perfectly for when I’m hauling the bike on my bike rack with the battery removed to keep debris/dust/moisture out of the cavity’s

Works and fits perfectly on my mokwheel basalt. Protects battery when traveling on trailer or in wet conditions.

Works great, it fits my bike pretty good, and it seems to be made of a good material, I got this one because it was cheaper than buying the name brand warmer for my bike, definitely worth it, good price

It's not the greatest as far as fit but it got the job done keeping the battery warm and reliable which is necessary in north idaho during fall and winter.

Seems to do the job well. Have dealt with PNW rain on my commute and, although I am soaked, when I pull the cover off my battery seems dry.

Fit is acceptable. Many returns on this item? I measured the circumference of the downtube and verified that is was within the fit range that the manufacturer provided. Velcro is very strong and the material construction is good. I do not have a 'FAT BIKE' so I chose the smaller version of this wrap.if in doubt the manufacturer offers both sizes for a reasonable price. I see there are similar items online that cost $40.00 apparently with no advantage over this $9.00 wrap

The size is nice but they added the brand name on it and ruined it

I bought this cover to protect my battery dock when the second battery is not attached. It is a very tight fit but works to protect the contacts. (It will not cover both batteries at the same time.) Reflective printing on the sides enhances your visibility at night. A good value for only $10.