Sidekick Compact U-Lock, Black | Lightweight Anti-Theft Bike Lock for Road, Mountain & Electric Bikes with Keys

Amazing lock! Great compact size! Feels very well made.

Cool and sturdy little lock. Useful for locking your tire rims to the frame. This is a great lock, but if you do not have access to bicycle racks or thinner poles, I would suggest that you purchase a larger lock. This one is very small and may pose a problem with those who live in cities where locking options are sparse or bicycle unfriendly.

I bought one of these in may 2020 to use along with another small Krypnonite mini on a beater bike in NYC. I dont leave my bike out at night bcz thats a big NO NO here in the city, but ive left it locked up for most of the day at times & this one worked perfectly as an additional security. My beater recently died (RIP my friend) & I now have a somewhat nicer bike with more expensive components on it so Im upgrading my locking game however I will still also use this lock which is STILL functioning perfectly -I never had an issue with it, at this point the rubber coating is tearing off in the u area but other than that is still going strong. Id definitely recommend as an extra backup lock.

Sturdy Should be wider

I'd buy it again.

Great value for a sturdy lock. This lock is small and easy to carry on my bike when commuting to school. It is easy to open and is very secure.

Check the camera m: The thief sawed the lock on the store front and left without breaking it, thank God.

I like the size and weight of the lock. I was looking for something small enough to do the job but also not get in the way of my ride. This is it. I highly recommend it.

This small u-lock is just the right size for most bike racks. The fit is so perfect I think it would be tough for a thief to fit a crowbar in and pop it open. It's also easy to hang on the bike somewhere.

The packaging and instructions strongly suggest that this is a knock-off (see photo). Locks seems decent for the price but the false advertising is unacceptable.

I generally stay away from U-Lock style bicycle locks because of the weight penalty and size compared to chain or weave locks. This one from Ottolock is small enough to take with me on longer rides, and it's light enough to bring with me but definitely feels robust, it does have some weight to it, but much less than that of comparable U-Locks from, for example, Kryptonite. I'm now much less concerned about locking up my mountain bike in the city where I live. The lock fits in my triangle frame bag and is hardly noticeable when I'm riding. The silicone outer material prevents it from scratching my bicycle frame and helps it hang wherever I've attached it when it's in use. The keys turn smoothly in the lock and there are no gaps in the construction (the connection of the U to bottom bolt is very stable when closed, no gap and little wiggle). Finding a pole (street sign, metal fence post, whatever) is a bit of a challenge sometimes due to the small circumference of the lock but I knew what I was getting when I purchased it. All in all for around 40€ I am extremely impressed. The ONLY criticism I have of the product has nothing to do with the design or implementation. I was a little concerned when I first received it about how to remove the zip-tie holding the keys. It's quite tightly/closely secured to the U and given that the surface of the lock is a silicone sleeve, I was worried about cutting into it when removing the zip-tie with scissors. I was able to do it with a pair of very small swiss army knife scissors and some patience, without marking the silicone. Overall this product fulfilled my expectations entirely.

This seems to be a great little lock and it would be all good except the way they packaged it. They zip tied the keys so tightly to the lock that I damaged it trying to cut the keys off and totally ruined the look of it. Obviously I can't return it now and I have an ugly looking lock now. Very frustrating and disapppointing.

Too small for using as a stand alone bike lock.