Warmly Tips: This Anti Fog Spray has been solidified specially, In order to better the quality of transportation,No leaking and No damage. When using, just add 20ML-25ML (about 70%) of pure water to liquefy the anti-fogging agent in the bottle,please shake it several minutes. 1 Pc X Anti Fog Spray .(empty bottle +Sponge with water and shake) Item Type:Anti Fog Spray Bottle Size:10*2.2*.2.2cm Net Content: 30ML Quantity: 1 Pc. Feature: Each bottle provides 375 sprays for 750 sprays total which should last years Our anti-fog spray is formulated to last for up to 5 days per application Simply spray on both sides of each lens of your eyewear, wait 5 seconds, and wipe dry with cloth Anti Fog Spray is the safest and most effective anti fog spray available Effective for all lenses without coatings ,Eyeglasses, Sunglasses, Sports Eye Wear , Snorkel, Ski, Paintball, Dive Masks, Swimming Goggles, Safety Glasses and Goggles.