‘Lot’s of customers were wondering… Can I use BKZW around windshield or Isinglass! The answer is “YES”! The problem with canvas is that the sun, salt, sea, and weather, degrade the canvas! Using Bee’s Knees Zipper Wax at the seams, on the zippers, and snaps, helps to protect the canvas, increases it’s life, and where ever you apply Bee’s Knees Zipper Wax, it becomes more water tight!