Fit Cuffs – Complete V3.1 Hard Case + (LOP Device). Fit Cuffs is a state-of-the-art Training System exclusively developed for Blood Flow Restriction (BFR) Exercise. Fit Cuffs works by inflating solid yet pliable cuffs using a solid pump/pressure gauge and durable metal quick-disconnectors. This edition includes the Arm Cuffs V3.1 developed for swift single-handed attachment and the curved/cone Leg Cuff V3 that has a wide velcro attachment area which allows for a customizable fit. By changing the placement of the velcro strap you get a personal fit that will accommodate any thigh shape. By design, this variable-contour Cuff can be adjusted to any thigh shape thereby attaining optimized pressure distribution during exercise. This edition includes the LOP Device (V1.1) developed for the measurement of Limb Occlusion Pressure (LOP), as a convenient and validated alternative to handheld Dopplers. (2 x Leg Cuffs V3.1 45-85 cm / 17.7-33.5 Inch + 2 x Arm Cuffs V3.1 20-50 cm / 7.9-20 Inch). One-Size-Fits-All.