Sweating Arms Arm trimmer can provide thermal compression to the bicep area increase heat and sweating during exercise, help you lose extra water weight, burn more, promote perspiration and blood circulation. PremiumMade with Neoprene for Superior heat insulation. The trimmer's smooth inner lining will not only flexible and comfortable but also minimize slipping and bunching during your workout. Perfect FitEach Arm Trimmer with adjustable magic straps that are designed to contour and flex around your bicep creating the perfect fit for your shape and size. Accelerate calories burning, make your arm slimmer Workout PartnersThe arm trimmers provide strong compression support on inner arms, compress your arm fat and tone your muscle. Crush your goals like a machine with this feature that will help you maximize your arm workouts any day of the week. SIZINGMedium - 74*20.85cm - Includes Right & Left Arm Trimmer. Measure around your torso to find the right size trimmer for you.