Sinclair is the leading source of sex education videos for adults who want to improve the quality of intimacy and sex in their relationships. Since 1991, Sinclair has developed an extensive library of videos covering everything from advanced sexual positions to erectile dysfunction solutions. Their best selling Better Sex Video Series, has sold more than four million videos in over 24 countries. Sinclair videos allow individuals to learn about sexuality topics in the privacy of their own home in a format recommended by therapists. The Sinclair Institute understands the need for quality sexual health education and is committed to helping couples overcome the wide range of barriers that affect the quality of sexual relationships.