The SKLZ (R) Chrome performance training line elevates athleticism for the elite. The SKLZ (R) Speed Chute uses resistance to quickly improve stride length and frequency as you max out top end speed. Depending on your speed, the chute adds 15 to 30 lbs of resistance to maximum your workout. As your training progresses, try the quick-release buckle for a mid-stride, "shot-out-of-the-cannon" sensation. FEATURES: Chute speed trainer for maximizing top end speed Measures 54" x 54" and provides approximately 15-30 lbs. of resistance (depending on speed) Built-in mesh panels prevent strings from tangling and improves stability Quick-release belt buckle allows for acceleration bursts 360 deg rotation belt with free-motion ring allows movement in any direction Adjustable belt for secure fit SAQ-SC01-02