If you require durability and a longer lifespan from your hair system, our Fine Mono is an ideal choice for you. The durability of our custom mono hair system is the welded mono construction, which is more durable than lace. The reason why hair systems made completely out of welded mono are so strong is that the material is rigid. Without movement it is harder for the knots to loosen and shed. The Fine Mono hair systems are also able to keep their contour and shape longer due to the addition of stitching lines. The strength of Fine Mono also means that it can hold high density hair. Fine mono is durable and breathable.