Replacement Rainbow Trampoline Mat These mats are manufactured using the highest strength polypropylene mat fabric. This gives a very high strength while still allowing the mat to 'breathe'. The design greatly reduces air resistance especially on the rebound. Cheaper mats using lower grade material can only achieve the required strength by using a denser weave the downside to this design is that air resistance is dramatically increased and the mat acts as a large 'sail' on rebound greatly reducing rebound force. Anti-Graze:These mats are hot-rolled after weaving to give the mat a smooth feel. This reduces the skin-grazing effect experienced on most other trampoline mats. Key Features: Anti Graze Trampoline Mat High strength polypropylene Breathable fabric 8 row stitching Please measure the DIAMETER of your mat the number of spring LOOPS and the LENGTH of your springs to ensure the mat is the correct size. Please choose your product carefully.