Fantastic purchase. Pricing was great for 2 pack. Collars are sturdy and have reflective strip in them for walking at night. The clasps are tight and do not open unnecessarily. Sizing is accurate per the chart. Colors are as described. Will definitely purchase again.I have 2 Bichon dogs that play a little rough. The focus of their play is to try tear up or take off each other's collar. 2 collars at this price was great and these are damaged at all, so the quality is pretty good too.ive been using this for my two german/husky puppies and theyve held up pretty well ive only had problems with the blue collar coming loose but thats cause its being pulled by one of them they reflect nicely in the dark.I have bought these before and were very durable and worked great. Keep an eye on this collar because it could come apart. This one may have been faulty which can happen. I am glad my dog didn't jump the fence because she has a tendency to do that.So I have 7 large dogs and 2 small. I love these collars. I have bought several because I cannot fault the collar for the dogs playing with each other's collar. Sometimes they get a bit rough and yep there goes another one. Yes, they do loosen. Here's the trick after sizing the collar just right take it off wrap duct tape just behind the slider so it can't loosen. Works great. I would love a larger pack maybe one with each color. The only other thing that could make these better would be a metal buckle, but that would elevate the price. Of course i could just teach the dogs to leave each other's collar alone. Mom always takes the fun away... LolThese are perfect. Reasonably priced, bright colors...I bought these for my senior dogs. They’re kinda thin but easily adjustable. I wouldn’t pay more than what i did for the 2.. too early to test durabilityI order too small. Had to reorder a larger size. I will donate these collars to the locate pet rescue center. They are very nice collars.Two smaller than I thought in width nylon reflective collars, Fitted well and suited both our sprockets well.I bought these for both my dogs. They look really nice and reflect well. The only problem I have is the collar keeps loosening which means the dogs can slip the collar and lead whenever they wantI use these for my dog when we go somewhere she'll be swimming instead of her leather or chain collars. They are nicely adjustable, of sound quality, and the hi-vis is a nice tough for spotting her in the forest at night, even by firelight. They dry well and snap on/off confidently.These collars would be good for decoration or if you only needed something to put tags on. However, if you actually walk your dogs, look for something else. My boys don't pull a whole lot, but these collars are constantly needing adjusting because they come loose. I will be returning them.Second time we’ve purchased these. They work great on our two fur babies. We’ll worth the money. They only reason we but again was because one of the puppies found their collar and chewed it.