All FrogTape® brand painter’s tapes are treated with patented PaintBlock® Technology, a super-absorbent polymer that reacts with the water in latex paint and instantly gels to form a micro-barrier that seals the edges of the tape, preventing paint bleed and the need for touch-ups. The results are crisp, clean paint lines the first time. The signature FrogTape® canister protects your tape edge not only against moisture, but nicks and dents that can ruin the tape edge during storage.