Power Web Jr. allows duplication of virtually all joint actions including flexion, extension, opposition, abduction, pronation, and supination. Resistance of each web can be modified to meet specific needs by adjusting hand position and or depth of finger insertion. Both hands can be exercised at once, or a single finger isolated and exercised. Helps with hand rehabilitation and flexibility. Accommodates all hand sizes and strength levels. Exercise coupled with proper resistance allows for full range of motion. Color-coded resistance levels for variability. One Exerciser does the work of many. Easy and fun to use.