• The spring is thickened steel, the main body structure is strong, daily exercise open and close a number of times will not be loose or broken, with a two or three years can still maintain the elasticity, more durable than ordinary models.
• The grip is made of foam, soft to the touch, no burrs on the edges, and the palm will not be sore after pinching for a long time; there are small lines on the surface, and it is not easy to slip when the hand is sweaty or hard, so the grip is stable.
• There are several gears from 10kg (for girls or just starting out) to 50kg (for those who have been practicing for a long time), and the knob can be twisted lightly to change the resistance, so you don't have to use tools, and you can find the right amount of strength, whether you want to slim down your arms or build up your muscles.
• Folded on more than 20 centimeters long, light weight, gym bag, desk drawer, business suitcase can be stuffed, get up in the morning, lunch break, catching up with the drama can be practiced a few groups, do not waste time.
• A simple training manual is sent with the order, which draws common movements for arms, chest, back and shoulders, so that novices can learn accordingly without having to figure it out on their own, avoiding ineffective or injurious movements in the wrong way.