Dear Customer, thank you for your comments. As checked, this frame has a weight: 20g. Moreover, you can also check the weight of the frame from the frame page itself from the frame details. If you prefer, TR is a type of lightweight and flexible plastic, which is not easily broken. You may also check our frame materials here
for more information. We offer 30-Day Exchange&Return
: Unsatisfactory glasses can be exchanged or refunded within 30 days of receiving. Only shipping fees will apply. Please feel free to contact us if you need. Stay safe and healthy!