My mate / outdoor accesory

In a small square box, there is a friend who is doing outdoor activity with you. ‘MY MATE’ looks pointy in the beginning but it is getting roundly by eating your ‘activity’. If you keep doing
outdoor activity, ‘MY MATE’ will show you more pleasant look. On the other way, ‘MY MATE’ will stop changing its look if you are getting lazy or stop doing outdoor activity. This changing condition of ‘MY MATE’ can be the frequency of your outdoor activity. ‘MY MATE’ lives together with a user and becomes an intimate friend who leads him/her to have sustainedsustained out outdoor activity.