Koolgrips Royal Blue Color 4' x 1.65" Diameter Swimming Pool Ladder Rail Cover Keep your swimming experience cool and comfortable with Koolgrips. The Koolgrips "Kool Comfort Cover" provides a slip-resistant grip for your railings. 4 foot length. Fits up to 1.9" diameter ladders and hand rails for a tight fit. Sold Individually Also Available in 6', 8' and 10' Lengths