Think if Tiger Balm but in patch-form. SUPER cooling instantly helps with tight/sore muscles. For someone who is constantly typing away at a desk every day, these bad boys are a girl's best friend! You MIGHT need assistance to apply the patch to the middle of your back (if you have negative flexibility, like me), but, once applied, the patches last for hours without coming off! The squares can even be cut into strips or smaller squares for application on wrists or behind the ears to help with headaches. LOVE THEM!