There are no significant differences between the items other than the pack size and the number of razor blades. Here are the main points: - Technology and design: both products use the same SkinGuard technology, which positions the blades to cut hair at skin level to avoid skin irritation and razor bumps. They also have the same number of blades per blade (3 blades) and the same enhanced lubricating formula with aloe. - Compatibility: Both are compatible with the same handles, including SkinGuard, Fusion5, ProGlide and ProGlide Shield. - Purpose: Both are specially designed and clinically tested for sensitive skin. The main difference therefore lies in the number of razor blades per sales unit.