Dear Customer, this frame is made of TR materials which are referred to as plastic titanium, a memory polymer material frame. TR frame has lightweight and impacts resistance and high temperature. It is colorful and has no release of chemical residues. However, it is a little less durable than metal and may fade, burn, and lose strength over time. You can also check our frame materials here
for more information. Hope this is helpful. For any further questions or immediate assistance, you may also call our call center thru toll-free hotline at 1-855-487-6006 opens every day from 7 a.m.- 4 p.m. PDT. You can also contact us through our Live Chat Support Team: Start a live chat (Everyday, 4 a.m.-10 p.m. PDT.) or email us at firstname.lastname@example.org. Please stay safe and healthy!