Specifications: it is suitable for boxing, mma, aerobics and fitness training. The bearing design does not wind the rope. Jump rope has a key to reset button. It can burn calories and fat while exercising your muscles during jumping. It has a rope length adjustment hole. Lightweight, durable and comfortable handle makes it easy to grasp and carry. Anti-slip handle design can effectively anti-skid during skipping rope. Item name: skipping rope material: braided rope, foam handle battery: 2 x aaa batteries (not inlcuded) features: exam special counting, adjustable, braided size: 15cm x 15cm x 10cm/5.91" X 5.91" X 3.94" (Approx.) Notes: due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package includes: 1 x skipping rope