CHECK THE PROVIDED SIZE CHART (in image section above). Sizing is specific to this item and will not correspond with your usual clothing sizeThe TYR Venzo Openback Influx Kneesuit is the latest in tech suit innovation. As the industry's first and only technical suit to analyze drag from a microscopic perspective, the TYR Venzo Open Back Kneesuit utilizes ultra-smooth fiber to thread a frictionless, durable fabric. Designed with state-of-the-art Surface Lift Technology, Venzo prevents water from permeating its fabric, resulting in a higher body position in the water. In addition, a patent-pending taping and inner textile design known as the suits Endo Max Compression Cage provides a shield of support for the abdominals, obliques, and quadriceps. This cage not only creates a snapback effect in the water but also helps to increase distance per stroke. Working in tandem with this technology is Venzos Seamless Exo Shell, a sleek construction geared toward streamlining body position. Finally, Venzos bonded Endless Straps provide athletes with state-of-the-art comfort and stability as they move effortlessly through the water Features: Microscopic Drag Analysis Ultra-Smooth Fiber Fabric Surface Lift Technology Endo Max Compression Cage Snapback Effect Seamless Exo Shell Bonded Endless Straps Enhanced Body Position Frictionless Design Durable Material Fabrication: 70% Nylon / 30% Lycra Spandex ]]>