Yes! The Aqualogix Hybrid Fins are available in 3 different resistance levels. The Green Low Resistance “High Speed” Fins (4”) are great for beginning stages of rehab, long cardio sets, kick resistance for swimmers and those waiting quick tempo movement patterns. The Smoke or Pink Medium Resistance “All-Purpose” Fins (5″) are perhaps our most versatile size. Great for those ready for an increase in resistance to all the previous uses of the Green Fins and more general strength training. The Max Resistance Fins (6”) are ideal for stronger or more experienced users. The increased drag will generally mean slower tempo movements and lower reps.