Features: The compression arm sleeves with sweat enhancing technology boost local heat retention to accelerate perspiration, effectively toning and slimming arm shaping during workouts. Use breathable spandex, the stretchy arm sleeves provide muscle hugging compression while allowing full mobilities for dynamic exercise routines. Great for fitness enthusiasts targeting stubborn arm fat, particularly women searching defining triceps and men pursuing vascular arm definition through high intensity training. Perfect for indoor cycling , HIIT classes, or home Pilates workouts where enhancing thermogenesis maximizes calorie burn and muscle engagement. The moisture wicking fabric prevent chafing during repetitive movement, while the thumbhole design ensures secure positioning during overhead lift and yoga poses. Specifications: Product Dimension: As picture shown Component: Spandex Type Option: 4 optional type as picture shown Color: 01/02 Package Includes: 1 Pair Sport Arm band note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color of the item.