Easily light up your patio, fence, mailbox or pool area with stylish vinyl solar caps. Environmentally friendly, the Fairmont solar cap uses the latest solar power technology, collecting energy from the sunlight and storing it in a re-chargeable AA Ni-MH battery to light the post cap at night. The length of time that the light stays on at night is directly proportionate to the amount of sun exposure received during the day. Each cap has two high output LED lights and a brand new solar cell providing brilliant white light. Cap fits a 4"x4" post and includes adapters to accomodate a 3.5" x 3.5" or 5" x 5" post.