the Speedo Aqua glove have change my life and level of thumb pain . I have arthritis in my thumb joint . before use the glove during swimming , I massage the thumb joint constantly to eliminate the tightness and pain . after purchase the glove as a alternative to water weight , the pain diminish significantly . the glove seem to stretch the tendon thus reduce the tightness for the rest of the day . kudos for a simple solution to a painful problem .