Set of 5 Dual-Chamber Pool Cover Water Tubes Each 94.49 x 11.81-inch winter pool cover water bag is equipped with reflective strips to improve visibility in low-light conditions and enhance safety. These bags are designed to secure your pool cover throughout the winter season, effectively keeping leaves and debris out of the pool to maintain cleanliness and reduce upkeep. Improved Safety Measures for Winter Pools Adaptable Design for Unconventional Pool Shapes Dual-Chamber Design with Enhanced Stability Sturdy and Long-Lasting PVC Construction Secure Seal with Twist Cap Key Features Improved Winter Pool Protection: This set of five 94.49 x 11.81-inch water bags is crafted to firmly secure your winter pool cover. Featuring reflective strips on both ends, they enhance visibility during nighttime for added safety. When filled, these bags provide the necessary weight to hold the cover in place, effectively shielding your inground pool from debris and strong winds throughout the winter