WATER RESISTANT CONNECTIONS: A durable weather-resistant and water-resistant rubber gasket seal surrounding the entire closure keeps your cord connections dry and safe from dust, dirt, and debris (NOTE: This product is water-resistant, NOT waterproof; Not for use under water; Will not keep out water under extremely wet conditions) PROVIDES A SAFE CONNECTION: The Safety Seal protects your cords, lights, tools, and accessories from water, dirt, and other debris that can cause dangerous electrical shorts and other damage EASY TO USE: Simple, practical, and effective—just connect your cords, place into the safety seal and close, no tools or installation required; A snap-lock lid flap and adjustable cord slots keep your cords securely connected and in place even when tugging on cords while using power tools and equipment during lawn and garden work VERSATILE, MULTIPURPOSE USE: Highly versatile and is perfect for both indoor and outdoor use; Great for Christmas lights, Halloween lights and string lights, water fountain and pool pumps, air conditioners, heaters, security cameras and more; Compatible with all cord sizes 12-gauge and smaller HEAVY DUTY CONSTRUCTION: Made with durable, heavy-duty molded plastic to withstand rain, snow, ice, dirt and dust; Large housing fits grounded extension cords, large cord connections and even strings of lights/cords