Selective lift elliptical exercise apparatus

Selectively dynamic exercise platform

Selectorized dumbbell

Selectorized dumbbell having a selector comprising a pin...

Selectorized dumbbell having a selector comprising a pin...

Selectorized dumbbell having shock absorbing nested weights...

Selectorized dumbbell having shock absorbing system...

Selectorized dumbbell having twin pin selector

Selectorized dumbbell using commodity weights

Self centering steering mechanism

Self spotting exercise apparatus

Self-administered back massage

Self-conformable head support

Self-energizing ski-practicing device

Self-generating oscillating pressure exercise device

Self-generating wrist ball

Self-positioning vaginal weight with facilitation

Self-powered human centrifuge

Self-retaining exercise/physical therapy device

Self-rotational exerciser