Smart Tools SmartCuffs® 4.0 — 2 Pairs 4 Cuffs • iBFR™ LOP Calibration in 10 Seconds • Tri-Pressure™ Technology • Bluetooth® Connected • 80% LOP Safety Cap • 5x Battery Life • 30-Min Charge • Mix & Match S / M / L / XL • FREE Shipping Train Both Upper and Lower Body Simultaneously — The Ultimate BFR Setup. SmartCuffs® 4.0 — 2 Pairs includes 4 SmartCuffs® with permanently affixed pumps, giving you the flexibility to train both arms and legs at the same time. Building on the global success of SmartCuffs® 3.0, this fourth-generation system combines cutting-edge AI-powered technology, advanced safety features, and superior comfort for clinical and personal use. Patent-pending iBFR™ LOP Calibration determines your Limb Occlusion Pressure in just 10 seconds. Exclusive Tri-Pressure™ Technology offers three BFR modes: Continuous, Intermittent, and Resting. Bluetooth® connectivity pairs with the SmartCuffs® app (iOS & Android). Inflation capped at 80% LOP. Li-Ion battery lasts 5x longer than competing wireless BFR systems and charges in under 30 minutes. Mix and match sizes across both pairs to suit different limbs. Includes durable carrying case and USB-C charging block and cable. Key Features ✓ 4 SmartCuffs® — train arms and legs simultaneously ✓ Patent-pending iBFR™ LOP Calibration — clinically validated, LOP in 10 seconds ✓ Tri-Pressure™ Technology — Continuous, Intermittent, and Resting BFR modes ✓ Safety-first — inflation capped at 80% LOP ✓ Bluetooth® connectivity — SmartCuffs® app (iOS & Android) ✓ Li-Ion battery — 5x longer life, charges in 30 minutes ✓ Proprietary air bladder — uniform inflation, no skin pinching ✓ Pre-curled internal stiffeners — prevent cuff slippage ✓ Mix & match sizes across both pairs (S, M, L, XL) ✓ Includes durable carrying case and USB-C charging block and cable Specifications & Resources Specification Detail Model SmartCuffs® 4.0 Quantity 4 cuffs (2 pairs) Application Arms and legs Calibration Patent-pending iBFR™ — LOP in 10 seconds BFR Modes Continuous, Intermittent, Resting (Tri-Pressure™ Technology) Safety Cap 80% LOP maximum inflation Connectivity Bluetooth® — SmartCuffs® app (iOS & Android) Battery Rechargeable Li-Ion — 5x longer than competitors Charging Time 30 minutes or less Packaged Dimensions 6" × 4" × 6" Weight 8 lbs Includes 4 SmartCuffs® with integrated pumps, durable carrying case, USB-C charging block and cable Brand Smart Tools Sizing Guide Size Circumference Measuring Instructions Small 8–13 in. Arms: between shoulder and bicep • Legs: thigh closest to hip Medium 13–18 in. Arms: between shoulder and bicep • Legs: thigh closest to hip Large 18–24 in. Arms: between shoulder and bicep • Legs: thigh closest to hip X-Large 24–29 in. Arms: between shoulder and bicep • Legs: thigh closest to hip • If between sizes, choose the larger size Frequently Asked Questions Can I choose different sizes for each pair? Yes — you can mix and match sizes across both pairs. For example, you could select Small/Small for your arms and Large/Large for your legs, or any other combination from the available size options. What are the three BFR modes? Continuous BFR inflates during both exercise and rest — ideal for advanced rehab or joint unloading. Intermittent BFR inflates only during exercise — great for beginner rehab or joint de-loading. Resting BFR inflates during rest and deflates during exercise — perfect for easing into BFR or advanced rehab with heavier weights. Does it connect to an app? Yes — SmartCuffs® 4.0 pairs via Bluetooth® with the SmartCuffs® app, available on the Apple App Store and Google Play. Smartphone not included. Is it safe to use at home? Yes — inflation is automatically capped at 80% LOP, providing a built-in safety limit for effective and secure BFR training at home or in a clinical setting. Do you offer financing? Yes! Flexible financing options available at checkout. Train Both Upper and Lower Body Simultaneously — The Ultimate BFR Setup. SmartCuffs® 4.0 — 2 Pairs (4 cuffs). iBFR™, Tri-Pressure™, Bluetooth®, 5x battery life, mix & match S/M/L/XL. FREE Shipping included. Add to cart now — FREE Shipping included. Safe & Secure Shopping SSL Encrypted Checkout • Secure Payment Processing • Privacy Protected • 100% Authentic Products • FREE Shipping
