Lie face up on a bench or rack holding a dumbbell in each hand with a neutral close grip (palms facing each other). Let your arms hang straight. Pull the dumbbells toward your torso by bending at the elbows, keeping them close to your body. Squeeze your shoulder blades together at the top, then lower the dumbbells back down with control. Repeat for reps.
Log your dumbbell lying close grip parallel row on rack sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.