Magic 7/8 in. x 11 ft. Tub and Wall, Peel and Stick Caulk Strip in White 3014 - The Home Depot
Caulk or Sealant Which Fits Your Bathtub Best?
Magic White Shower Caulk Strip - Pre-shaped, Flexible Trim with Butyl Adhesive - Mildew Resistant - Easy Alternative to Regular Caulk in the Caulk Strips department at Lowes.com