Caution: color: we ship according to the color of the first picture, in the package: If the quantity is not stated in the description, we will ship the item according to the quantity and model in the title.If the title does not have a quantity, it is 1pcs. Parachuterun-training parachute the product is shipped based on the color or size of the main image of the product page. Maximize your training parachute interval training is a high-intensity type of exercise. You train at 80 - 100% of your maximum heart rate. High intensity training is an explosive form of exercise that causes the muscles to set themselves to hard physical activity. During training, a lot of energy is incinerated, the glycogen supply in the muscles is broken down and signals to the body that it needs more energy, which means that the combustion is started. After the workout, the effect of the muscle growth caused by the exercise is amplified to the fact that the combustion also increases at rest as the muscles need more energy as the basic energy demand increases. This training parachute keeps the same high standard as those used in nhl. It is made to lie as stable as possible in the air when running and thus prevent it "fluttering around" which is common for many other brands. An adjustable velcro allows you to easily attach it around the waist or chest. Du kan också dra loss bandet mitt under en intervall för att verkligen uppleva vilket motstånd den ger. Material: polyester storlek: 51 - 106 cm runt midjan färg: svart och vit diameter: 140 cm weight: 180 g supplied in a storage bag.