Dyneema is an extremely high strength product being made of High Modulus Polyethylene (HMPE) that is very low stretch and weight for weight is the strongest fibre in the world. Ropes made of Dyneema fibre are durable due to their good resistance to both mechanical and environmental attack. The properties of the fibre are not affected by water. The breaking strength is the same in wet and dry conditions and even the long term properties of the fibre do not deteriorate in wet or humid conditions. The resistance to Ultra Violet light is good and in general the influence of the environment is negligible. Oil or commonly used chemicals do not affect Dyneema. In use the ropes exhibit a good abrasion resistance. Tension-tension fatigue is very good (Dyneema ropes out-perform steel and other synthetic rope materials) Bending fatigue results are also very good.