Dear Bryce, thanks for your feedback. This frame is made of Ultem which is a polyetherimide resin. Ultem glasses are strong, stiff, and resistant to a broad range of chemicals. Their lightweight and flexibility make them very comfortable to wear. Sometimes, repeated contact or friction with frames can cause a rash to appear; heat (sweat) can also be a factor here. Allergies, however, occur when someone is oversensitive to a substance in the specs and your immune system reacts by producing rashes and blisters. If you are allergic to thermoplastic, we would recommend titanium frames as a replacement. Please don't worry, we offer a 30-day return&exchange in which unsatisfied glasses can be exchanged or refunded within 30 days of receiving. Please check here for details: https://www.firmoo.com/help-p-73.shtml. With this, Our CSR will reach out to you via email within 24 hours. Please check your inbox or spam mail. Thank you.