ADJUSTABLE BELT.--2'' Wide Nylon Waist Harness with Quick Release Buckle and Metal Adjustable Buckle make it adjustable perfectly.It's easy to be adjusted to fit chest or waist.
EXCELLENT QUALITY. --Made with high quality Polyester, 54'' Diameter offers 15-30lbs. of the resistance, helping to accelerate your sprint, speed and strength.
D-RING DESIGN.--Strap rotates 360 degree with a Metal D-ring, which means you can sprint in any direction.Two Clips is for a lift off in case you want to accelerate.
KEEP ON RUNNING.-- It is really cool and wonderful outdoor fitness equipment for stamina, strength and edurance. You also can tie two chutes to get more effect.
FITS FOR.--Made for all athletes who drills for explosive power and speed at the same time, to help increase muscular endurance, improve your stamina, and accelerate faster.