EVA cushion The diameter of the round hole is 1.4mm. For this reason, we recommend customers to purchase the round hole model in safety consideration, as this model can be very effective in blocking BB attack The insole surface coating of this product has excellent impact resistance that is able to withstand 500 fps (even meters effective distance). The visual range of the round hole model is relatively limited, but it can be very effective in preventing the invasion of attacking objects (of course, any cross-sectional area of the attacking objects must be larger than the area of the holes). Airsoft Paintball No Fog Metal Mesh Goggle Glasses OD for $9.44 Airsoft Goggles Best Seller Cool BB Gun Airsoft Safety Glasses Steel Mesh Fog Free Mascara Airsoft No matter how intense the exercise is, as long as you wear it correctly, the product will not loose. OAREA Cool BB Gun Steel Mesh Safety Airsoft Goggles - No Fog Protection Airsoft Goggles (Black Brown Green As shown in the figure, the head regulation paddle can automatically adjust the angle according to different head shapes to maximize the degree of adaptation of the glasses. The diameter of the round hole is 1.4mm. Shipping days: 7-15 (maybe registrar in peak season). Net weight: about 0.05kg Shipping Weight: 0.25kg Material: TPU frame Low carbon steel mesh: steel wire annealing process. Comfortable - This product can be adjusted according to the wisdom of the head.