The glasses are lightweight but must be handled with care.
Small problem: the branches, clipped, do not fold.
They are still less comfortable to wear eyeglasses that Panasonic - TY-ER3D4ME (rechargeable), but they are more expensive 3X! So I decided to have two pairs Panasonic TY-ER3D4ME, Samsung and two extra pairs that are more suitable for children.