Abstract: An eyeglasses apparatus and transformation system thereof, facilitating quick and easy convertibility of the left and right traditionally folding temples into an adjustable headband; thereby making the light-weight eyeglasses much more suited to dynamic activities such as jogging, skiing, and cycling for example. The user of this novel eyeware can advantageously move between more sedentary situations, where the extreme appearance of eye-goggles would appear very out of place;—yet by manually releasing an inconspicuously integrated pair of bifurcated retention-latches located immediately aftward of both temple-hinges, the temples can be instantly detatched and readily interchanged with a headband employing similar slide-in bayonet-type retention-latches.