This is a flat dental floss which is made of many strong nylon strands woven together to prevent shredding or fraying. Prepared with natural waxes, the floss glides so smoothly between the teeth and it is really gentle on gums,I love the flat shape and broader surface it really lets you clean your teeth also great if you have tight teeth like I do. The floss is super strong and has the right amount of wax and the spearmint flavor really makes your mouth feel clean and fresh.I really hate floss that frays along my teeth it is the worst feeling but this one never frays it is so strong and durable.The wax used is from bees wax, carnauba wax and jojoba wax all natural ingredients and natural spearmint oils.