SPEED & STRENGTH TRAINING: The resistance parachute help you do strength training and speed training, improve your acceleration ability, muscle endurance and the ability to adjust direction in high-speed running. HOW TO USE: This drag chute gives a good mild resistance by offering pulling back strength when you keep running. As the air resistance will produce a backward drag, the faster you run, the greater the drag force generated. Depending on different speed, it can provide 25-50 lbs of resistance. DURABLE MATERIAL: This training chute made of high quality Polyester and waterproof Silver Coating, lightweight and foldable, come with a storage bag for easy carry. ADJUSTABLE WAIST BELT: The adjustable waist sizes is 20-42 inch. The adjustable heavy-duty wasit belt is fully adjustable and will comfortably be for all body types of users. MULTI-USE: Double umbrella style, the resistance parachutes can be widely used in training track and field, running, cycling, sprint, football, basketball, speed skating and other projects. Diameter: Approx 57 inch / 145 cm Features: 1. Adjustable waist strap fits all body types of users. 2. Depending on different speed, it can provide 25-50 lbs of resistance. 3. Strength and speed training, increase explosiveness, speed and core strength. 4. Come with a carry bag, lightweight umbrella body, easily folds and fits into the carry bag, can be brought to anywhere. How To Use: 1. Please tie the belt around your waist and run as fast as you can, the faster you run, the greater the drag force you get. 2. To ensure durability, please be careful not to drag the umbrella to the ground. Specifications: Material: Polyester and waterproof silver coating Color: Black Waist Size: 20-42 inch Diameter: Approx 57 inch / 145 cm Package Content: 1 x Double Parachute Note: 1.The actual item's color maybe slightly different from the pictures shown due to the lighting or computer screens. 2.If our products have any quality problems, please do not hesitate to contact us, we would like to provide you with the best service.