I have tight teeth, which floss should I use?

Our nylon sponge flosses (Peppermint, Vanilla Mint, Clove Cardamom) expand between teeth and are great for tight teeth.
Our Silk Flosses (Unscented and Silk Green Tea) are made from pure silk. They are round flosses that fit between tight teeth, but do not expand between the teeth.
All of our flosses are coated in plant wax for a smooth glide.