New England Ropes Glider 2xDry TPT Bi-Pattern Rope - 9.9mm TPT (Twill Pattern Technology) is a 1-over-1 sheath design that results in a lower coefficient of friction, significantly reducing drag through protection and has great handling properties Endura Dry is our proprietary dry treatment process. All of our ropes have Endura dry treated cores. Select styles have a Dry treatment where the cover is coated with Endura Dry Treatment as well as the core for the ultimate in dry protection. These models carry the "Dry" designation on our website. Static Elongation 5%, Dynamic Elongation 29% Specs: 7 UIAA Falls, 66 g/m, impact force 9.5 kN