Crews FF128B ForceFlex Safety Glasses With Opaque Black Thermo Plastic Urethane Frame, Blue Diamond Mirror Polycarbonate Duramass Anti-Fog Anti-Scratch Lens And Black Temple Sleeve (1/EA) Melamine Dining Room more durable and more heat

more durable and more heat resistant

Methlamine

* Includes (1) piece of white chalk

yet pliable to allow for tongue buckle leg straps

Crews FF128B ForceFlex Safety Glasses With Opaque Black Thermo Plastic Urethane Frame, Blue Diamond Mirror Polycarbonate Duramass Anti-Fog Anti-Scratch Lens And Black Temple Sleeve (1/EA) Melamine Dining Room more durable and more heatForceFlex technology incorporates a patented, multi injection molding of the lens with a flexible Thermo Plastic Urethane (TPU) frame. Due to this construction, it can achieve a military ballistic level impact resistance at over 1000 feet per second. The TPU material allows the frame to flex and fit individual faces from large to small. All ForceFlex styles meet military MIL PRF 3103 clause 3. 5. 1. 1 for high velocity impact protection and exceed