• 【Upgraded Materials】 Made of skin-friendly neoprene with excellent internal sealing, Zeerun weighted vest ensures non-chafing & prevents iron particles from leaking out during high-intensity workouts. • 【Durable & Safe】 Double-stitched reinforced seams withstand rigorous movements, while the reasonable weight distribution reduces shoulder and back overload—minimizes sports injury risks. • 【Ergonomic Design】 The thickened shoulder pads disperse pressure, while the elastic band and adjustable buckle closely adhere to the body curve, say goodbye to annoying shaking, creating a snug comfortable fit. • 【Gradually Progressing】 Zeerun provides 8 different weights options (6lb/8lb/10lb/12lb/15lb/18lb/24lb/30lb), as the intensity of fitness increases, gradually choosing a heavier vest, even beginners can grow into fitness experts.