The package includes:1 x Water damSpecification:Material: SiliconeColor: Black/White/Gray/Clear Length: 50cm (19in), 100cm (39in), 150cm (59in), 200cm (79in), 250cm (99in), 300cm (119in), 350cm (139in), 400cm (159in)Width: 1.6 cm (0.63 inch)Height: 3 cm (1.18 inches)feature:1. Long and flexible design creates various shapes.2. The shower barrier and retention system keep the water within the threshold.3. Very suitable for barrier-free showers and other areas that need to hold water.4. This product is self-adhesive and easy to install. In addition to the glass glue we provide you, it is also close to the ground and does not leak water.how to use:1. Remove water and dust from the ground.2. Determine the location of the water retention zone and mark it on the ground with a marker.3. Remove the adhesive, and then install the waterproof layer to the marked position.4. Seal the rubber strip at the position where both ends of the water retaining strip are in contact with the wall.5. Apply glue on both sides of the water stop and apply it evenly.6. Dry for at least 24 hours without contact with water.note:1. Due to manual measurement, please allow an error of 1-2cm. Make sure not to mind before bidding.2. If you have any questions, please feel free to contact us for 24 hours.