Most reformers use five springs. The Exhale Aura, Luma & Una reformers feature five German-engineered springs, offering a full range of resistance combinations for both light and heavy loading. The quality of the spring system matters as much as the number, the German-engineered springs across the Exhale range are calibrated for consistent tension that doesn't degrade over time.
The Xpeed Exhale range of reformers feature a total of 5 springs: 2 red springs, 2 blue springs and 1 yellow spring.
Red = full strength (heavy resistance)
Blue = half strength (medium resistance)
Yellow = quarter strength (light resistance)