No sliding, no rocking mid-rep — so you can focus entirely on your lift, not on steadying the bench. 【8+4+2 Positions — From 90° Shoulder Press to -30° Decline Without Tools】One-hand knob lock system lets you dial in 8 backrest angles, 4 seat positions, and 2 footrest settings covering flat bench, incline, decline, and full upright seated press — all tool-free.