AeuezXX Cord Locks - Pack of 10 Double Hole Spring Locks, Plastic Slides Cord Clamp, Black, 17mm

Prefect fit and easy to use for my 6YO kids school tie.

I would give these 4.5 stars if I could, taking off 0.5 becuase there are tiny injection moulding spurs left on them from manufacture that if not removed might snag a delicate material, but they are easy enought to bite or break off, and are v small. Plus they come in a re-sealable plastic ziplock bag, not card or paper bag - environmentally betterOtherwise these little cord grips are very good. they have a good sized hole so easy to get cords through, and they also grip the cords well, and are a good size to be easy to operate but not to chunky.Though you would likely want bigger ones if they are for cords where you will operate with thick gloves on - these are a bit small for using with winter gloves on.

These work well, the spring in them is decent, it has a good spring back which holds the laces well, and keeps them in place.The plastic of these feel strong, and the size of them is good enough that I don’t find them fiddly at all, which is nice.All in all, these are super useful in my opinion.