Comfortable to wear, perfect fit: This glasses side shield is made of flexible and soft TPU material; provides a comfortable wearing experience, ensuring you can focus on your work without discomfort; perfectly fits glasses measuring 1.97 inches long and 1.77 inches wide Good eye protection: The side shields of glasses can protect your eyes from wind and dust, minimizing the damage caused by windblown particles; suitable for outdoor wear and scientific experiments without hindering your vision. Versatile compatibility: The glasses safety side shields are suitable for a variety of activities, compatible with most glasses, and provide excellent protection without compromising comfort and style Easy to install: Our glasses side shields are easy to install, no tools required; just slide them onto the glasses holder to secure a tight fit; each shield is marked with an [R] or [L] sign for easy correct placement; they fit small and medium glasses holders with a width of less than 10 mm. Soft TPU enhances flexibility Material: These TPU side shields for glasses can flexibly improve the safety of ordinary glasses; this side shield can act as a barrier, and at the same time, there is no need to buy safety glasses separately, which is convenient and practical Colour:Black Transparent Material:Plastic Package Contents: 30 pairs x side shields for glasses Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.