I bought these because I am very allergic to nickel and the price was much cheaper than buying a nickel-free belt. I was very wary of nylon belts because, in my experience, the fastening device never holds them and they end up loosening throughout the day - but not this one!This belt buckle is made of hard plastic and it securely holds the belt in place. I love that I'm not relying on pre-punched holes in a belt to find the size that fits me anymore. It's so convenient and easy to tighten it to a comfortable spot and snap the buckle shut. It's even easy to unbuckle it!I originally was just going to purchase one belt, but I liked the colors that came with the dual belt package - and I am so thankful I went with two! I keep one in my work pants and move the other one around to casual pants. These belts look great and they are so comfortable to wear.My only issue with them is that the elastic loop that secures the "extra belt" (after you've tightened it) can sometimes slip off when you pull the belts out of pants, but if you're mindful to hold onto it or pick it up off the floor then it's no issue.I will definitely be getting more of these!1yr update: These belts are still going strong. They’re exactly like they were the day I bought them. Very sturdy, very comfortable. They haven’t lost any durability or anything. Still recommend!!3yr update: Still the best purchase I've made. The only sign of wear is the elastic band that has stretched out a bit on one of the belts, but that is a cheap and easy replacement if you need it. The belt itself has not stretched at. all. after 3 years of daily use. These belts are so comfortable and an amazing purchase for the price.