While sheltering in place, my dog is getting outside a lot. I don't have any flea and ticks but I wanted to prevent any future problems. I have never tried a flea and tick collar before but I don't like the messy and gooey topicals.I opened the tin and found two collars. The collar is a nice material and very flexible. It is easy to put on the dog and you simply slide the end through the clasp and cut off extra material. I wasn't exactly sure how tight to make the collar but noticed in the instructions it said "two fingers" from neck. So not too tight or too loose. I read a few reviews about the color burning the dog but I wonder if those reviewers were having their dog wear the color too tight. I am on day three and no problems.What I like about this collar is that is really flexible and a bit stretchy. This seems to help with the fit and make it comfortable for my dog. The collar fits nicely around my dog's neck and I am able to cover the collar with my regular collar.I read someplace that if you have flea and tick problems, you need a number of products for your pet, home and your yard. I don't believe a collar alone will fix a infestation but this collar is really great for peace of mind and preventing fleas and killing flea eggs.