DVIC Bike Locks Heavy Duty Anti Theft Combination Ultra Light Fiber Patented Korea, Security Cable for Bicycle 39.4 Inches(100cm)

I was looking for a bike lock to fit into my small under-seat cargo bag that was light-weight and still leave me enough room for my mini flat-tire kit, wallet and cell phone. I got the longest Dvic lock and it all fits great with room to spare. I was surprised how light and compact it is. The locking mechanism is metal and seems well made. It couldn’t be easier to program your own combination and it’s long enough to go through both wheels and the frame (I highly recommend getting the longest one since it it so light and compact). The Velcro strap that holds it together for storage is very strong. I didn’t try the bolt cutter test on it so I can’t fully judge security. I only use the lock for locking my bike up to go into a store or restaurant while the bike is in a public place, so I hope this is enough of a deterrent. I am certain a U-lock is much more secure, but I didn’t want one of those heavy locks mounted to my frame and still have my quick-release wheels/tires begging to be stolen. If I went that route, I would still need to carry a heavy chain or cable.

I love how this lock is compact, light weight, and uses a combination. I would only use this for short bathroom breaks, or at a monitored bike valet, but for that kind of use case it is amazing. So light weight, able to fit in a small saddle bag along with your tools and patch kit, and you don’t have to worry about forgetting a key. I even threw it in my jersey pocket on a ride and forgot it was there, but in case I needed to stop to buy a drink or something, it would prevent a snatch an grab theft pretty well I think. The fact that I will probably always bring it with me means it will do a better job than any really heavy lock that I leave behind because I don’t want to bring the weight/bulk. Again, this is NOT for securing your bike in any sketchy places or for longer than a few minutes, it’s just for quick stops and discouraging any opportunistic thieves in secure locations. I got the 24" version and it just barely fits around a bike frame and a standard bike rack. Update: The mechanism used to set the combination feels a little cheap/weak, but so far, after 6 or 7 uses, it's still holding up. I still give this thing five stars.

The security provided by this lock is one of those things that’s only provable by testing it against cutters of various kinds. I don’t intend to try to destroy it to prove it’s going to keep my bike from being stolen. And I simply won’t use it in higher risk situations. But, for a quick and easy deterrent in easier situations it just might do the trick. As is, I think the Kevlar belt (instead of chain/cable) is more dependable than the simple barrel combination lock it’s attached to. The lock seems pretty light weight. In its favor is the light weight, non-stiff, and easily wrapped, easy to store and use attributes. There’s simply no reason to leave home without it. For serious situations I’d want a heavy weight chain and heavy lock setup. Or, even better, I’d avoid those areas entirely.

I actually own four electric bikes. One is a fat tire bike, two are mountain bikes and I just purchased a commuter bike. Each bike has a slightly different frame making it difficult to find a fitting solution for different situations. Most of the time it's easy finding a suitable place to anchor my bike. I need a versatile solution that allows me to secure my bikes for ANY situation I might encounter....whether a vertical post such as a street light or something more horizontal like a hand rail. And I love the compact, shape-able design so I can quickly fit it in my bag. BTW, I've owned products manufactured by Kryptonite, Master and FoldyLocks. Most other security devices are heavy, inflexible and/or too short. The DVIC bike lock checks all the right boxes. My only gripe is that it should be offered in different colors so any would-be-thief could see from a distance my bike is locked up.

I carefully changed the "password" per instructions and verified that it locked and unlocked. While unlocked I wrapped it with the velcro and then inserted the lock end. I shouldn't have gone in because the numbers were different than my setting, but it did for some reason. I didn't think to note the numbers but turned to my setting and it wouldn't open. It wouldn't open on the original 0000 setting either. Now it will unlock and is useless. I don't know how the setting changed, perhaps the reset knob turned while it was open, but even if I knew the new combo I would not want a lock whose combo changed so easily.

I purchased both 150 and 200 cm lengths looking for a lightweight and compact bike lock. 150cm is just long enough to pass through both wheels and frame. 200cm works for 2 bikes or large anchors like trees. Combination is easy to set and good enough strength. Any cable lock is just to good to keep honest people honest so like this compromise. Still need to be careful to keep few $$$$ bike safe.

El Velcro se daña en menos de 3 meses de uso continuo

Very easy to store on the bike I combined two of them together to make it a 10 foot length because I have an electric tricycle and I wanted to pass through all three wheels and sometimes there’s an additional bike with me. Programming the lock code is very easy and —- Locking and unlocking is not difficult I can’t attest to its resistance because I don’t wanna destroy the product that’s mine but what I’ve seen online gives me comfort