Generally, piping cord is used for shaping or decoration. Traditional piping cord is made of nylon or poly yarn, which is not waterproof. Thus, for some waterproof bags, waterproof plastic piping cord is necessary.
For a small makeup bag, a small diameter piping cord would be better. If you need a soft one, 100% TPU piping cord can meet your request. If you need a strong one, we have TPU coated nylon piping cord.
Compared with traditional piping cord, TPU piping cord has the better shaping result. Plus, it is waterproof so that can protect makeup from water soaking. It is benefit from TPU surface. TPU is waterproof and mould-proof, which separates water and objects in bags.
Ps. Some pictures of this article is from internet.